gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60 # URI of GIT logo (72x27 size)
  61 our $logo = "++GITWEB_LOGO++";
  62 # URI of GIT favicon, assumed to be image/png type
  63 our $favicon = "++GITWEB_FAVICON++";
  64
  65 # URI and label (title) of GIT logo link
  66 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67 #our $logo_label = "git documentation";
  68 our $logo_url = "http://git.or.cz/";
  69 our $logo_label = "git homepage";
  70
  71 # source of projects list
  72 our $projects_list = "++GITWEB_LIST++";
  73
  74 # default order of projects list
  75 # valid values are none, project, descr, owner, and age
  76 our $default_projects_order = "project";
  77
  78 # show repository only if this file exists
  79 # (only effective if this variable evaluates to true)
  80 our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82 # only allow viewing of repositories also shown on the overview page
  83 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85 # list of git base URLs used for URL to where fetch project from,
  86 # i.e. full URL is "$git_base_url/$project"
  87 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89 # default blob_plain mimetype and default charset for text/plain blob
  90 our $default_blob_plain_mimetype = 'text/plain';
  91 our $default_text_plain_charset  = undef;
  92
  93 # file to use for guessing MIME types before trying /etc/mime.types
  94 # (relative to the current git repository)
  95 our $mimetypes_file = undef;
  96
  97 # assume this charset if line contains non-UTF-8 characters;
  98 # it should be valid encoding (see Encoding::Supported(3pm) for list),
  99 # for which encoding all byte sequences are valid, for example
 100 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 101 # could be even 'utf-8' for the old behavior)
 102 our $fallback_encoding = 'latin1';
 103
 104 # You define site-wide feature defaults here; override them with
 105 # $GITWEB_CONFIG as necessary.
 106 our %feature = (
 107         # feature => {
 108         #       'sub' => feature-sub (subroutine),
 109         #       'override' => allow-override (boolean),
 110         #       'default' => [ default options...] (array reference)}
 111         #
 112         # if feature is overridable (it means that allow-override has true value),
 113         # then feature-sub will be called with default options as parameters;
 114         # return value of feature-sub indicates if to enable specified feature
 115         #
 116         # if there is no 'sub' key (no feature-sub), then feature cannot be
 117         # overriden
 118         #
 119         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 120
 121         # Enable the 'blame' blob view, showing the last commit that modified
 122         # each line in the file. This can be very CPU-intensive.
 123
 124         # To enable system wide have in $GITWEB_CONFIG
 125         # $feature{'blame'}{'default'} = [1];
 126         # To have project specific config enable override in $GITWEB_CONFIG
 127         # $feature{'blame'}{'override'} = 1;
 128         # and in project config gitweb.blame = 0|1;
 129         'blame' => {
 130                 'sub' => \&feature_blame,
 131                 'override' => 0,
 132                 'default' => [0]},
 133
 134         # Enable the 'snapshot' link, providing a compressed tarball of any
 135         # tree. This can potentially generate high traffic if you have large
 136         # project.
 137
 138         # To disable system wide have in $GITWEB_CONFIG
 139         # $feature{'snapshot'}{'default'} = [undef];
 140         # To have project specific config enable override in $GITWEB_CONFIG
 141         # $feature{'snapshot'}{'override'} = 1;
 142         # and in project config gitweb.snapshot = none|gzip|bzip2|zip;
 143         'snapshot' => {
 144                 'sub' => \&feature_snapshot,
 145                 'override' => 0,
 146                 #         => [content-encoding, suffix, program]
 147                 'default' => ['x-gzip', 'gz', 'gzip']},
 148
 149         # Enable text search, which will list the commits which match author,
 150         # committer or commit text to a given string.  Enabled by default.
 151         # Project specific override is not supported.
 152         'search' => {
 153                 'override' => 0,
 154                 'default' => [1]},
 155
 156         # Enable grep search, which will list the files in currently selected
 157         # tree containing the given string. Enabled by default. This can be
 158         # potentially CPU-intensive, of course.
 159
 160         # To enable system wide have in $GITWEB_CONFIG
 161         # $feature{'grep'}{'default'} = [1];
 162         # To have project specific config enable override in $GITWEB_CONFIG
 163         # $feature{'grep'}{'override'} = 1;
 164         # and in project config gitweb.grep = 0|1;
 165         'grep' => {
 166                 'override' => 0,
 167                 'default' => [1]},
 168
 169         # Enable the pickaxe search, which will list the commits that modified
 170         # a given string in a file. This can be practical and quite faster
 171         # alternative to 'blame', but still potentially CPU-intensive.
 172
 173         # To enable system wide have in $GITWEB_CONFIG
 174         # $feature{'pickaxe'}{'default'} = [1];
 175         # To have project specific config enable override in $GITWEB_CONFIG
 176         # $feature{'pickaxe'}{'override'} = 1;
 177         # and in project config gitweb.pickaxe = 0|1;
 178         'pickaxe' => {
 179                 'sub' => \&feature_pickaxe,
 180                 'override' => 0,
 181                 'default' => [1]},
 182
 183         # Make gitweb use an alternative format of the URLs which can be
 184         # more readable and natural-looking: project name is embedded
 185         # directly in the path and the query string contains other
 186         # auxiliary information. All gitweb installations recognize
 187         # URL in either format; this configures in which formats gitweb
 188         # generates links.
 189
 190         # To enable system wide have in $GITWEB_CONFIG
 191         # $feature{'pathinfo'}{'default'} = [1];
 192         # Project specific override is not supported.
 193
 194         # Note that you will need to change the default location of CSS,
 195         # favicon, logo and possibly other files to an absolute URL. Also,
 196         # if gitweb.cgi serves as your indexfile, you will need to force
 197         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 198         'pathinfo' => {
 199                 'override' => 0,
 200                 'default' => [0]},
 201
 202         # Make gitweb consider projects in project root subdirectories
 203         # to be forks of existing projects. Given project $projname.git,
 204         # projects matching $projname/*.git will not be shown in the main
 205         # projects list, instead a '+' mark will be added to $projname
 206         # there and a 'forks' view will be enabled for the project, listing
 207         # all the forks. If project list is taken from a file, forks have
 208         # to be listed after the main project.
 209
 210         # To enable system wide have in $GITWEB_CONFIG
 211         # $feature{'forks'}{'default'} = [1];
 212         # Project specific override is not supported.
 213         'forks' => {
 214                 'override' => 0,
 215                 'default' => [0]},
 216 );
 217
 218 sub gitweb_check_feature {
 219         my ($name) = @_;
 220         return unless exists $feature{$name};
 221         my ($sub, $override, @defaults) = (
 222                 $feature{$name}{'sub'},
 223                 $feature{$name}{'override'},
 224                 @{$feature{$name}{'default'}});
 225         if (!$override) { return @defaults; }
 226         if (!defined $sub) {
 227                 warn "feature $name is not overrideable";
 228                 return @defaults;
 229         }
 230         return $sub->(@defaults);
 231 }
 232
 233 sub feature_blame {
 234         my ($val) = git_get_project_config('blame', '--bool');
 235
 236         if ($val eq 'true') {
 237                 return 1;
 238         } elsif ($val eq 'false') {
 239                 return 0;
 240         }
 241
 242         return $_[0];
 243 }
 244
 245 sub feature_snapshot {
 246         my ($ctype, $suffix, $command) = @_;
 247
 248         my ($val) = git_get_project_config('snapshot');
 249
 250         if ($val eq 'gzip') {
 251                 return ('x-gzip', 'gz', 'gzip');
 252         } elsif ($val eq 'bzip2') {
 253                 return ('x-bzip2', 'bz2', 'bzip2');
 254         } elsif ($val eq 'zip') {
 255                 return ('x-zip', 'zip', '');
 256         } elsif ($val eq 'none') {
 257                 return ();
 258         }
 259
 260         return ($ctype, $suffix, $command);
 261 }
 262
 263 sub gitweb_have_snapshot {
 264         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 265         my $have_snapshot = (defined $ctype && defined $suffix);
 266
 267         return $have_snapshot;
 268 }
 269
 270 sub feature_grep {
 271         my ($val) = git_get_project_config('grep', '--bool');
 272
 273         if ($val eq 'true') {
 274                 return (1);
 275         } elsif ($val eq 'false') {
 276                 return (0);
 277         }
 278
 279         return ($_[0]);
 280 }
 281
 282 sub feature_pickaxe {
 283         my ($val) = git_get_project_config('pickaxe', '--bool');
 284
 285         if ($val eq 'true') {
 286                 return (1);
 287         } elsif ($val eq 'false') {
 288                 return (0);
 289         }
 290
 291         return ($_[0]);
 292 }
 293
 294 # checking HEAD file with -e is fragile if the repository was
 295 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 296 # and then pruned.
 297 sub check_head_link {
 298         my ($dir) = @_;
 299         my $headfile = "$dir/HEAD";
 300         return ((-e $headfile) ||
 301                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 302 }
 303
 304 sub check_export_ok {
 305         my ($dir) = @_;
 306         return (check_head_link($dir) &&
 307                 (!$export_ok || -e "$dir/$export_ok"));
 308 }
 309
 310 # rename detection options for git-diff and git-diff-tree
 311 # - default is '-M', with the cost proportional to
 312 #   (number of removed files) * (number of new files).
 313 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 314 #   (number of changed files + number of removed files) * (number of new files)
 315 # - even more costly is '-C', '--find-copies-harder' with cost
 316 #   (number of files in the original tree) * (number of new files)
 317 # - one might want to include '-B' option, e.g. '-B', '-M'
 318 our @diff_opts = ('-M'); # taken from git_commit
 319
 320 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 321 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 322
 323 # version of the core git binary
 324 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 325
 326 $projects_list ||= $projectroot;
 327
 328 # ======================================================================
 329 # input validation and dispatch
 330 our $action = $cgi->param('a');
 331 if (defined $action) {
 332         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 333                 die_error(undef, "Invalid action parameter");
 334         }
 335 }
 336
 337 # parameters which are pathnames
 338 our $project = $cgi->param('p');
 339 if (defined $project) {
 340         if (!validate_pathname($project) ||
 341             !(-d "$projectroot/$project") ||
 342             !check_head_link("$projectroot/$project") ||
 343             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 344             ($strict_export && !project_in_list($project))) {
 345                 undef $project;
 346                 die_error(undef, "No such project");
 347         }
 348 }
 349
 350 our $file_name = $cgi->param('f');
 351 if (defined $file_name) {
 352         if (!validate_pathname($file_name)) {
 353                 die_error(undef, "Invalid file parameter");
 354         }
 355 }
 356
 357 our $file_parent = $cgi->param('fp');
 358 if (defined $file_parent) {
 359         if (!validate_pathname($file_parent)) {
 360                 die_error(undef, "Invalid file parent parameter");
 361         }
 362 }
 363
 364 # parameters which are refnames
 365 our $hash = $cgi->param('h');
 366 if (defined $hash) {
 367         if (!validate_refname($hash)) {
 368                 die_error(undef, "Invalid hash parameter");
 369         }
 370 }
 371
 372 our $hash_parent = $cgi->param('hp');
 373 if (defined $hash_parent) {
 374         if (!validate_refname($hash_parent)) {
 375                 die_error(undef, "Invalid hash parent parameter");
 376         }
 377 }
 378
 379 our $hash_base = $cgi->param('hb');
 380 if (defined $hash_base) {
 381         if (!validate_refname($hash_base)) {
 382                 die_error(undef, "Invalid hash base parameter");
 383         }
 384 }
 385
 386 our $hash_parent_base = $cgi->param('hpb');
 387 if (defined $hash_parent_base) {
 388         if (!validate_refname($hash_parent_base)) {
 389                 die_error(undef, "Invalid hash parent base parameter");
 390         }
 391 }
 392
 393 # other parameters
 394 our $page = $cgi->param('pg');
 395 if (defined $page) {
 396         if ($page =~ m/[^0-9]/) {
 397                 die_error(undef, "Invalid page parameter");
 398         }
 399 }
 400
 401 our $searchtype = $cgi->param('st');
 402 if (defined $searchtype) {
 403         if ($searchtype =~ m/[^a-z]/) {
 404                 die_error(undef, "Invalid searchtype parameter");
 405         }
 406 }
 407
 408 our $searchtext = $cgi->param('s');
 409 our $search_regexp;
 410 if (defined $searchtext) {
 411         if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 412                 die_error(undef, "Invalid search parameter");
 413         }
 414         if (length($searchtext) < 2) {
 415                 die_error(undef, "At least two characters are required for search parameter");
 416         }
 417         $search_regexp = quotemeta $searchtext;
 418 }
 419
 420 # now read PATH_INFO and use it as alternative to parameters
 421 sub evaluate_path_info {
 422         return if defined $project;
 423         my $path_info = $ENV{"PATH_INFO"};
 424         return if !$path_info;
 425         $path_info =~ s,^/+,,;
 426         return if !$path_info;
 427         # find which part of PATH_INFO is project
 428         $project = $path_info;
 429         $project =~ s,/+$,,;
 430         while ($project && !check_head_link("$projectroot/$project")) {
 431                 $project =~ s,/*[^/]*$,,;
 432         }
 433         # validate project
 434         $project = validate_pathname($project);
 435         if (!$project ||
 436             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 437             ($strict_export && !project_in_list($project))) {
 438                 undef $project;
 439                 return;
 440         }
 441         # do not change any parameters if an action is given using the query string
 442         return if $action;
 443         $path_info =~ s,^$project/*,,;
 444         my ($refname, $pathname) = split(/:/, $path_info, 2);
 445         if (defined $pathname) {
 446                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 447                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 448                 $pathname =~ s,^/+,,;
 449                 if (!$pathname || substr($pathname, -1) eq "/") {
 450                         $action  ||= "tree";
 451                         $pathname =~ s,/$,,;
 452                 } else {
 453                         $action  ||= "blob_plain";
 454                 }
 455                 $hash_base ||= validate_refname($refname);
 456                 $file_name ||= validate_pathname($pathname);
 457         } elsif (defined $refname) {
 458                 # we got "project.git/branch"
 459                 $action ||= "shortlog";
 460                 $hash   ||= validate_refname($refname);
 461         }
 462 }
 463 evaluate_path_info();
 464
 465 # path to the current git repository
 466 our $git_dir;
 467 $git_dir = "$projectroot/$project" if $project;
 468
 469 # dispatch
 470 my %actions = (
 471         "blame" => \&git_blame2,
 472         "blobdiff" => \&git_blobdiff,
 473         "blobdiff_plain" => \&git_blobdiff_plain,
 474         "blob" => \&git_blob,
 475         "blob_plain" => \&git_blob_plain,
 476         "commitdiff" => \&git_commitdiff,
 477         "commitdiff_plain" => \&git_commitdiff_plain,
 478         "commit" => \&git_commit,
 479         "forks" => \&git_forks,
 480         "heads" => \&git_heads,
 481         "history" => \&git_history,
 482         "log" => \&git_log,
 483         "rss" => \&git_rss,
 484         "atom" => \&git_atom,
 485         "search" => \&git_search,
 486         "search_help" => \&git_search_help,
 487         "shortlog" => \&git_shortlog,
 488         "summary" => \&git_summary,
 489         "tag" => \&git_tag,
 490         "tags" => \&git_tags,
 491         "tree" => \&git_tree,
 492         "snapshot" => \&git_snapshot,
 493         "object" => \&git_object,
 494         # those below don't need $project
 495         "opml" => \&git_opml,
 496         "project_list" => \&git_project_list,
 497         "project_index" => \&git_project_index,
 498 );
 499
 500 if (!defined $action) {
 501         if (defined $hash) {
 502                 $action = git_get_type($hash);
 503         } elsif (defined $hash_base && defined $file_name) {
 504                 $action = git_get_type("$hash_base:$file_name");
 505         } elsif (defined $project) {
 506                 $action = 'summary';
 507         } else {
 508                 $action = 'project_list';
 509         }
 510 }
 511 if (!defined($actions{$action})) {
 512         die_error(undef, "Unknown action");
 513 }
 514 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 515     !$project) {
 516         die_error(undef, "Project needed");
 517 }
 518 $actions{$action}->();
 519 exit;
 520
 521 ## ======================================================================
 522 ## action links
 523
 524 sub href(%) {
 525         my %params = @_;
 526         # default is to use -absolute url() i.e. $my_uri
 527         my $href = $params{-full} ? $my_url : $my_uri;
 528
 529         # XXX: Warning: If you touch this, check the search form for updating,
 530         # too.
 531
 532         my @mapping = (
 533                 project => "p",
 534                 action => "a",
 535                 file_name => "f",
 536                 file_parent => "fp",
 537                 hash => "h",
 538                 hash_parent => "hp",
 539                 hash_base => "hb",
 540                 hash_parent_base => "hpb",
 541                 page => "pg",
 542                 order => "o",
 543                 searchtext => "s",
 544                 searchtype => "st",
 545         );
 546         my %mapping = @mapping;
 547
 548         $params{'project'} = $project unless exists $params{'project'};
 549
 550         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 551         if ($use_pathinfo) {
 552                 # use PATH_INFO for project name
 553                 $href .= "/$params{'project'}" if defined $params{'project'};
 554                 delete $params{'project'};
 555
 556                 # Summary just uses the project path URL
 557                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 558                         delete $params{'action'};
 559                 }
 560         }
 561
 562         # now encode the parameters explicitly
 563         my @result = ();
 564         for (my $i = 0; $i < @mapping; $i += 2) {
 565                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 566                 if (defined $params{$name}) {
 567                         push @result, $symbol . "=" . esc_param($params{$name});
 568                 }
 569         }
 570         $href .= "?" . join(';', @result) if scalar @result;
 571
 572         return $href;
 573 }
 574
 575
 576 ## ======================================================================
 577 ## validation, quoting/unquoting and escaping
 578
 579 sub validate_pathname {
 580         my $input = shift || return undef;
 581
 582         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 583         # at the beginning, at the end, and between slashes.
 584         # also this catches doubled slashes
 585         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 586                 return undef;
 587         }
 588         # no null characters
 589         if ($input =~ m!\0!) {
 590                 return undef;
 591         }
 592         return $input;
 593 }
 594
 595 sub validate_refname {
 596         my $input = shift || return undef;
 597
 598         # textual hashes are O.K.
 599         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 600                 return $input;
 601         }
 602         # it must be correct pathname
 603         $input = validate_pathname($input)
 604                 or return undef;
 605         # restrictions on ref name according to git-check-ref-format
 606         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 607                 return undef;
 608         }
 609         return $input;
 610 }
 611
 612 # decode sequences of octets in utf8 into Perl's internal form,
 613 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 614 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 615 sub to_utf8 {
 616         my $str = shift;
 617         my $res;
 618         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 619         if (defined $res) {
 620                 return $res;
 621         } else {
 622                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 623         }
 624 }
 625
 626 # quote unsafe chars, but keep the slash, even when it's not
 627 # correct, but quoted slashes look too horrible in bookmarks
 628 sub esc_param {
 629         my $str = shift;
 630         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 631         $str =~ s/\+/%2B/g;
 632         $str =~ s/ /\+/g;
 633         return $str;
 634 }
 635
 636 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 637 sub esc_url {
 638         my $str = shift;
 639         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 640         $str =~ s/\+/%2B/g;
 641         $str =~ s/ /\+/g;
 642         return $str;
 643 }
 644
 645 # replace invalid utf8 character with SUBSTITUTION sequence
 646 sub esc_html ($;%) {
 647         my $str = shift;
 648         my %opts = @_;
 649
 650         $str = to_utf8($str);
 651         $str = $cgi->escapeHTML($str);
 652         if ($opts{'-nbsp'}) {
 653                 $str =~ s/ /&nbsp;/g;
 654         }
 655         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 656         return $str;
 657 }
 658
 659 # quote control characters and escape filename to HTML
 660 sub esc_path {
 661         my $str = shift;
 662         my %opts = @_;
 663
 664         $str = to_utf8($str);
 665         $str = $cgi->escapeHTML($str);
 666         if ($opts{'-nbsp'}) {
 667                 $str =~ s/ /&nbsp;/g;
 668         }
 669         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 670         return $str;
 671 }
 672
 673 # Make control characters "printable", using character escape codes (CEC)
 674 sub quot_cec {
 675         my $cntrl = shift;
 676         my %es = ( # character escape codes, aka escape sequences
 677                    "\t" => '\t',   # tab            (HT)
 678                    "\n" => '\n',   # line feed      (LF)
 679                    "\r" => '\r',   # carrige return (CR)
 680                    "\f" => '\f',   # form feed      (FF)
 681                    "\b" => '\b',   # backspace      (BS)
 682                    "\a" => '\a',   # alarm (bell)   (BEL)
 683                    "\e" => '\e',   # escape         (ESC)
 684                    "\013" => '\v', # vertical tab   (VT)
 685                    "\000" => '\0', # nul character  (NUL)
 686                    );
 687         my $chr = ( (exists $es{$cntrl})
 688                     ? $es{$cntrl}
 689                     : sprintf('\%03o', ord($cntrl)) );
 690         return "<span class=\"cntrl\">$chr</span>";
 691 }
 692
 693 # Alternatively use unicode control pictures codepoints,
 694 # Unicode "printable representation" (PR)
 695 sub quot_upr {
 696         my $cntrl = shift;
 697         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 698         return "<span class=\"cntrl\">$chr</span>";
 699 }
 700
 701 # git may return quoted and escaped filenames
 702 sub unquote {
 703         my $str = shift;
 704
 705         sub unq {
 706                 my $seq = shift;
 707                 my %es = ( # character escape codes, aka escape sequences
 708                         't' => "\t",   # tab            (HT, TAB)
 709                         'n' => "\n",   # newline        (NL)
 710                         'r' => "\r",   # return         (CR)
 711                         'f' => "\f",   # form feed      (FF)
 712                         'b' => "\b",   # backspace      (BS)
 713                         'a' => "\a",   # alarm (bell)   (BEL)
 714                         'e' => "\e",   # escape         (ESC)
 715                         'v' => "\013", # vertical tab   (VT)
 716                 );
 717
 718                 if ($seq =~ m/^[0-7]{1,3}$/) {
 719                         # octal char sequence
 720                         return chr(oct($seq));
 721                 } elsif (exists $es{$seq}) {
 722                         # C escape sequence, aka character escape code
 723                         return $es{$seq}
 724                 }
 725                 # quoted ordinary character
 726                 return $seq;
 727         }
 728
 729         if ($str =~ m/^"(.*)"$/) {
 730                 # needs unquoting
 731                 $str = $1;
 732                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 733         }
 734         return $str;
 735 }
 736
 737 # escape tabs (convert tabs to spaces)
 738 sub untabify {
 739         my $line = shift;
 740
 741         while ((my $pos = index($line, "\t")) != -1) {
 742                 if (my $count = (8 - ($pos % 8))) {
 743                         my $spaces = ' ' x $count;
 744                         $line =~ s/\t/$spaces/;
 745                 }
 746         }
 747
 748         return $line;
 749 }
 750
 751 sub project_in_list {
 752         my $project = shift;
 753         my @list = git_get_projects_list();
 754         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 755 }
 756
 757 ## ----------------------------------------------------------------------
 758 ## HTML aware string manipulation
 759
 760 sub chop_str {
 761         my $str = shift;
 762         my $len = shift;
 763         my $add_len = shift || 10;
 764
 765         # allow only $len chars, but don't cut a word if it would fit in $add_len
 766         # if it doesn't fit, cut it if it's still longer than the dots we would add
 767         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 768         my $body = $1;
 769         my $tail = $2;
 770         if (length($tail) > 4) {
 771                 $tail = " ...";
 772                 $body =~ s/&[^;]*$//; # remove chopped character entities
 773         }
 774         return "$body$tail";
 775 }
 776
 777 ## ----------------------------------------------------------------------
 778 ## functions returning short strings
 779
 780 # CSS class for given age value (in seconds)
 781 sub age_class {
 782         my $age = shift;
 783
 784         if (!defined $age) {
 785                 return "noage";
 786         } elsif ($age < 60*60*2) {
 787                 return "age0";
 788         } elsif ($age < 60*60*24*2) {
 789                 return "age1";
 790         } else {
 791                 return "age2";
 792         }
 793 }
 794
 795 # convert age in seconds to "nn units ago" string
 796 sub age_string {
 797         my $age = shift;
 798         my $age_str;
 799
 800         if ($age > 60*60*24*365*2) {
 801                 $age_str = (int $age/60/60/24/365);
 802                 $age_str .= " years ago";
 803         } elsif ($age > 60*60*24*(365/12)*2) {
 804                 $age_str = int $age/60/60/24/(365/12);
 805                 $age_str .= " months ago";
 806         } elsif ($age > 60*60*24*7*2) {
 807                 $age_str = int $age/60/60/24/7;
 808                 $age_str .= " weeks ago";
 809         } elsif ($age > 60*60*24*2) {
 810                 $age_str = int $age/60/60/24;
 811                 $age_str .= " days ago";
 812         } elsif ($age > 60*60*2) {
 813                 $age_str = int $age/60/60;
 814                 $age_str .= " hours ago";
 815         } elsif ($age > 60*2) {
 816                 $age_str = int $age/60;
 817                 $age_str .= " min ago";
 818         } elsif ($age > 2) {
 819                 $age_str = int $age;
 820                 $age_str .= " sec ago";
 821         } else {
 822                 $age_str .= " right now";
 823         }
 824         return $age_str;
 825 }
 826
 827 # convert file mode in octal to symbolic file mode string
 828 sub mode_str {
 829         my $mode = oct shift;
 830
 831         if (S_ISDIR($mode & S_IFMT)) {
 832                 return 'drwxr-xr-x';
 833         } elsif (S_ISLNK($mode)) {
 834                 return 'lrwxrwxrwx';
 835         } elsif (S_ISREG($mode)) {
 836                 # git cares only about the executable bit
 837                 if ($mode & S_IXUSR) {
 838                         return '-rwxr-xr-x';
 839                 } else {
 840                         return '-rw-r--r--';
 841                 };
 842         } else {
 843                 return '----------';
 844         }
 845 }
 846
 847 # convert file mode in octal to file type string
 848 sub file_type {
 849         my $mode = shift;
 850
 851         if ($mode !~ m/^[0-7]+$/) {
 852                 return $mode;
 853         } else {
 854                 $mode = oct $mode;
 855         }
 856
 857         if (S_ISDIR($mode & S_IFMT)) {
 858                 return "directory";
 859         } elsif (S_ISLNK($mode)) {
 860                 return "symlink";
 861         } elsif (S_ISREG($mode)) {
 862                 return "file";
 863         } else {
 864                 return "unknown";
 865         }
 866 }
 867
 868 # convert file mode in octal to file type description string
 869 sub file_type_long {
 870         my $mode = shift;
 871
 872         if ($mode !~ m/^[0-7]+$/) {
 873                 return $mode;
 874         } else {
 875                 $mode = oct $mode;
 876         }
 877
 878         if (S_ISDIR($mode & S_IFMT)) {
 879                 return "directory";
 880         } elsif (S_ISLNK($mode)) {
 881                 return "symlink";
 882         } elsif (S_ISREG($mode)) {
 883                 if ($mode & S_IXUSR) {
 884                         return "executable";
 885                 } else {
 886                         return "file";
 887                 };
 888         } else {
 889                 return "unknown";
 890         }
 891 }
 892
 893
 894 ## ----------------------------------------------------------------------
 895 ## functions returning short HTML fragments, or transforming HTML fragments
 896 ## which don't belong to other sections
 897
 898 # format line of commit message.
 899 sub format_log_line_html {
 900         my $line = shift;
 901
 902         $line = esc_html($line, -nbsp=>1);
 903         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 904                 my $hash_text = $1;
 905                 my $link =
 906                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 907                                 -class => "text"}, $hash_text);
 908                 $line =~ s/$hash_text/$link/;
 909         }
 910         return $line;
 911 }
 912
 913 # format marker of refs pointing to given object
 914 sub format_ref_marker {
 915         my ($refs, $id) = @_;
 916         my $markers = '';
 917
 918         if (defined $refs->{$id}) {
 919                 foreach my $ref (@{$refs->{$id}}) {
 920                         my ($type, $name) = qw();
 921                         # e.g. tags/v2.6.11 or heads/next
 922                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 923                                 $type = $1;
 924                                 $name = $2;
 925                         } else {
 926                                 $type = "ref";
 927                                 $name = $ref;
 928                         }
 929
 930                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 931                                     esc_html($name) . "</span>";
 932                 }
 933         }
 934
 935         if ($markers) {
 936                 return ' <span class="refs">'. $markers . '</span>';
 937         } else {
 938                 return "";
 939         }
 940 }
 941
 942 # format, perhaps shortened and with markers, title line
 943 sub format_subject_html {
 944         my ($long, $short, $href, $extra) = @_;
 945         $extra = '' unless defined($extra);
 946
 947         if (length($short) < length($long)) {
 948                 return $cgi->a({-href => $href, -class => "list subject",
 949                                 -title => to_utf8($long)},
 950                        esc_html($short) . $extra);
 951         } else {
 952                 return $cgi->a({-href => $href, -class => "list subject"},
 953                        esc_html($long)  . $extra);
 954         }
 955 }
 956
 957 # format patch (diff) line (rather not to be used for diff headers)
 958 sub format_diff_line {
 959         my $line = shift;
 960         my ($from, $to) = @_;
 961         my $diff_class = "";
 962
 963         chomp $line;
 964
 965         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 966                 # combined diff
 967                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 968                 if ($line =~ m/^\@{3}/) {
 969                         $diff_class = " chunk_header";
 970                 } elsif ($line =~ m/^\\/) {
 971                         $diff_class = " incomplete";
 972                 } elsif ($prefix =~ tr/+/+/) {
 973                         $diff_class = " add";
 974                 } elsif ($prefix =~ tr/-/-/) {
 975                         $diff_class = " rem";
 976                 }
 977         } else {
 978                 # assume ordinary diff
 979                 my $char = substr($line, 0, 1);
 980                 if ($char eq '+') {
 981                         $diff_class = " add";
 982                 } elsif ($char eq '-') {
 983                         $diff_class = " rem";
 984                 } elsif ($char eq '@') {
 985                         $diff_class = " chunk_header";
 986                 } elsif ($char eq "\\") {
 987                         $diff_class = " incomplete";
 988                 }
 989         }
 990         $line = untabify($line);
 991         if ($from && $to && $line =~ m/^\@{2} /) {
 992                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 993                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 994
 995                 $from_lines = 0 unless defined $from_lines;
 996                 $to_lines   = 0 unless defined $to_lines;
 997
 998                 if ($from->{'href'}) {
 999                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1000                                              -class=>"list"}, $from_text);
1001                 }
1002                 if ($to->{'href'}) {
1003                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1004                                              -class=>"list"}, $to_text);
1005                 }
1006                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1007                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1008                 return "<div class=\"diff$diff_class\">$line</div>\n";
1009         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1010                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1011                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1012
1013                 @from_text = split(' ', $ranges);
1014                 for (my $i = 0; $i < @from_text; ++$i) {
1015                         ($from_start[$i], $from_nlines[$i]) =
1016                                 (split(',', substr($from_text[$i], 1)), 0);
1017                 }
1018
1019                 $to_text   = pop @from_text;
1020                 $to_start  = pop @from_start;
1021                 $to_nlines = pop @from_nlines;
1022
1023                 $line = "<span class=\"chunk_info\">$prefix ";
1024                 for (my $i = 0; $i < @from_text; ++$i) {
1025                         if ($from->{'href'}[$i]) {
1026                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1027                                                   -class=>"list"}, $from_text[$i]);
1028                         } else {
1029                                 $line .= $from_text[$i];
1030                         }
1031                         $line .= " ";
1032                 }
1033                 if ($to->{'href'}) {
1034                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1035                                           -class=>"list"}, $to_text);
1036                 } else {
1037                         $line .= $to_text;
1038                 }
1039                 $line .= " $prefix</span>" .
1040                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1041                 return "<div class=\"diff$diff_class\">$line</div>\n";
1042         }
1043         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1044 }
1045
1046 ## ----------------------------------------------------------------------
1047 ## git utility subroutines, invoking git commands
1048
1049 # returns path to the core git executable and the --git-dir parameter as list
1050 sub git_cmd {
1051         return $GIT, '--git-dir='.$git_dir;
1052 }
1053
1054 # returns path to the core git executable and the --git-dir parameter as string
1055 sub git_cmd_str {
1056         return join(' ', git_cmd());
1057 }
1058
1059 # get HEAD ref of given project as hash
1060 sub git_get_head_hash {
1061         my $project = shift;
1062         my $o_git_dir = $git_dir;
1063         my $retval = undef;
1064         $git_dir = "$projectroot/$project";
1065         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1066                 my $head = <$fd>;
1067                 close $fd;
1068                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1069                         $retval = $1;
1070                 }
1071         }
1072         if (defined $o_git_dir) {
1073                 $git_dir = $o_git_dir;
1074         }
1075         return $retval;
1076 }
1077
1078 # get type of given object
1079 sub git_get_type {
1080         my $hash = shift;
1081
1082         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1083         my $type = <$fd>;
1084         close $fd or return;
1085         chomp $type;
1086         return $type;
1087 }
1088
1089 sub git_get_project_config {
1090         my ($key, $type) = @_;
1091
1092         return unless ($key);
1093         $key =~ s/^gitweb\.//;
1094         return if ($key =~ m/\W/);
1095
1096         my @x = (git_cmd(), 'config');
1097         if (defined $type) { push @x, $type; }
1098         push @x, "--get";
1099         push @x, "gitweb.$key";
1100         my $val = qx(@x);
1101         chomp $val;
1102         return ($val);
1103 }
1104
1105 # get hash of given path at given ref
1106 sub git_get_hash_by_path {
1107         my $base = shift;
1108         my $path = shift || return undef;
1109         my $type = shift;
1110
1111         $path =~ s,/+$,,;
1112
1113         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1114                 or die_error(undef, "Open git-ls-tree failed");
1115         my $line = <$fd>;
1116         close $fd or return undef;
1117
1118         if (!defined $line) {
1119                 # there is no tree or hash given by $path at $base
1120                 return undef;
1121         }
1122
1123         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1124         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1125         if (defined $type && $type ne $2) {
1126                 # type doesn't match
1127                 return undef;
1128         }
1129         return $3;
1130 }
1131
1132 # get path of entry with given hash at given tree-ish (ref)
1133 # used to get 'from' filename for combined diff (merge commit) for renames
1134 sub git_get_path_by_hash {
1135         my $base = shift || return;
1136         my $hash = shift || return;
1137
1138         local $/ = "\0";
1139
1140         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1141                 or return undef;
1142         while (my $line = <$fd>) {
1143                 chomp $line;
1144
1145                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1146                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1147                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1148                         close $fd;
1149                         return $1;
1150                 }
1151         }
1152         close $fd;
1153         return undef;
1154 }
1155
1156 ## ......................................................................
1157 ## git utility functions, directly accessing git repository
1158
1159 sub git_get_project_description {
1160         my $path = shift;
1161
1162         open my $fd, "$projectroot/$path/description" or return undef;
1163         my $descr = <$fd>;
1164         close $fd;
1165         if (defined $descr) {
1166                 chomp $descr;
1167         }
1168         return $descr;
1169 }
1170
1171 sub git_get_project_url_list {
1172         my $path = shift;
1173
1174         open my $fd, "$projectroot/$path/cloneurl" or return;
1175         my @git_project_url_list = map { chomp; $_ } <$fd>;
1176         close $fd;
1177
1178         return wantarray ? @git_project_url_list : \@git_project_url_list;
1179 }
1180
1181 sub git_get_projects_list {
1182         my ($filter) = @_;
1183         my @list;
1184
1185         $filter ||= '';
1186         $filter =~ s/\.git$//;
1187
1188         my ($check_forks) = gitweb_check_feature('forks');
1189
1190         if (-d $projects_list) {
1191                 # search in directory
1192                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1193                 # remove the trailing "/"
1194                 $dir =~ s!/+$!!;
1195                 my $pfxlen = length("$dir");
1196
1197                 File::Find::find({
1198                         follow_fast => 1, # follow symbolic links
1199                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1200                         wanted => sub {
1201                                 # skip project-list toplevel, if we get it.
1202                                 return if (m!^[/.]$!);
1203                                 # only directories can be git repositories
1204                                 return unless (-d $_);
1205
1206                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1207                                 # we check related file in $projectroot
1208                                 if ($check_forks and $subdir =~ m#/.#) {
1209                                         $File::Find::prune = 1;
1210                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1211                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1212                                         $File::Find::prune = 1;
1213                                 }
1214                         },
1215                 }, "$dir");
1216
1217         } elsif (-f $projects_list) {
1218                 # read from file(url-encoded):
1219                 # 'git%2Fgit.git Linus+Torvalds'
1220                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1221                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1222                 my %paths;
1223                 open my ($fd), $projects_list or return;
1224         PROJECT:
1225                 while (my $line = <$fd>) {
1226                         chomp $line;
1227                         my ($path, $owner) = split ' ', $line;
1228                         $path = unescape($path);
1229                         $owner = unescape($owner);
1230                         if (!defined $path) {
1231                                 next;
1232                         }
1233                         if ($filter ne '') {
1234                                 # looking for forks;
1235                                 my $pfx = substr($path, 0, length($filter));
1236                                 if ($pfx ne $filter) {
1237                                         next PROJECT;
1238                                 }
1239                                 my $sfx = substr($path, length($filter));
1240                                 if ($sfx !~ /^\/.*\.git$/) {
1241                                         next PROJECT;
1242                                 }
1243                         } elsif ($check_forks) {
1244                         PATH:
1245                                 foreach my $filter (keys %paths) {
1246                                         # looking for forks;
1247                                         my $pfx = substr($path, 0, length($filter));
1248                                         if ($pfx ne $filter) {
1249                                                 next PATH;
1250                                         }
1251                                         my $sfx = substr($path, length($filter));
1252                                         if ($sfx !~ /^\/.*\.git$/) {
1253                                                 next PATH;
1254                                         }
1255                                         # is a fork, don't include it in
1256                                         # the list
1257                                         next PROJECT;
1258                                 }
1259                         }
1260                         if (check_export_ok("$projectroot/$path")) {
1261                                 my $pr = {
1262                                         path => $path,
1263                                         owner => to_utf8($owner),
1264                                 };
1265                                 push @list, $pr;
1266                                 (my $forks_path = $path) =~ s/\.git$//;
1267                                 $paths{$forks_path}++;
1268                         }
1269                 }
1270                 close $fd;
1271         }
1272         return @list;
1273 }
1274
1275 sub git_get_project_owner {
1276         my $project = shift;
1277         my $owner;
1278
1279         return undef unless $project;
1280
1281         # read from file (url-encoded):
1282         # 'git%2Fgit.git Linus+Torvalds'
1283         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1284         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1285         if (-f $projects_list) {
1286                 open (my $fd , $projects_list);
1287                 while (my $line = <$fd>) {
1288                         chomp $line;
1289                         my ($pr, $ow) = split ' ', $line;
1290                         $pr = unescape($pr);
1291                         $ow = unescape($ow);
1292                         if ($pr eq $project) {
1293                                 $owner = to_utf8($ow);
1294                                 last;
1295                         }
1296                 }
1297                 close $fd;
1298         }
1299         if (!defined $owner) {
1300                 $owner = get_file_owner("$projectroot/$project");
1301         }
1302
1303         return $owner;
1304 }
1305
1306 sub git_get_last_activity {
1307         my ($path) = @_;
1308         my $fd;
1309
1310         $git_dir = "$projectroot/$path";
1311         open($fd, "-|", git_cmd(), 'for-each-ref',
1312              '--format=%(committer)',
1313              '--sort=-committerdate',
1314              '--count=1',
1315              'refs/heads') or return;
1316         my $most_recent = <$fd>;
1317         close $fd or return;
1318         if (defined $most_recent &&
1319             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1320                 my $timestamp = $1;
1321                 my $age = time - $timestamp;
1322                 return ($age, age_string($age));
1323         }
1324 }
1325
1326 sub git_get_references {
1327         my $type = shift || "";
1328         my %refs;
1329         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1330         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1331         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1332                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1333                 or return;
1334
1335         while (my $line = <$fd>) {
1336                 chomp $line;
1337                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1338                         if (defined $refs{$1}) {
1339                                 push @{$refs{$1}}, $2;
1340                         } else {
1341                                 $refs{$1} = [ $2 ];
1342                         }
1343                 }
1344         }
1345         close $fd or return;
1346         return \%refs;
1347 }
1348
1349 sub git_get_rev_name_tags {
1350         my $hash = shift || return undef;
1351
1352         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1353                 or return;
1354         my $name_rev = <$fd>;
1355         close $fd;
1356
1357         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1358                 return $1;
1359         } else {
1360                 # catches also '$hash undefined' output
1361                 return undef;
1362         }
1363 }
1364
1365 ## ----------------------------------------------------------------------
1366 ## parse to hash functions
1367
1368 sub parse_date {
1369         my $epoch = shift;
1370         my $tz = shift || "-0000";
1371
1372         my %date;
1373         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1374         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1375         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1376         $date{'hour'} = $hour;
1377         $date{'minute'} = $min;
1378         $date{'mday'} = $mday;
1379         $date{'day'} = $days[$wday];
1380         $date{'month'} = $months[$mon];
1381         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1382                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1383         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1384                              $mday, $months[$mon], $hour ,$min;
1385         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1386                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1387
1388         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1389         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1390         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1391         $date{'hour_local'} = $hour;
1392         $date{'minute_local'} = $min;
1393         $date{'tz_local'} = $tz;
1394         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1395                                   1900+$year, $mon+1, $mday,
1396                                   $hour, $min, $sec, $tz);
1397         return %date;
1398 }
1399
1400 sub parse_tag {
1401         my $tag_id = shift;
1402         my %tag;
1403         my @comment;
1404
1405         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1406         $tag{'id'} = $tag_id;
1407         while (my $line = <$fd>) {
1408                 chomp $line;
1409                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1410                         $tag{'object'} = $1;
1411                 } elsif ($line =~ m/^type (.+)$/) {
1412                         $tag{'type'} = $1;
1413                 } elsif ($line =~ m/^tag (.+)$/) {
1414                         $tag{'name'} = $1;
1415                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1416                         $tag{'author'} = $1;
1417                         $tag{'epoch'} = $2;
1418                         $tag{'tz'} = $3;
1419                 } elsif ($line =~ m/--BEGIN/) {
1420                         push @comment, $line;
1421                         last;
1422                 } elsif ($line eq "") {
1423                         last;
1424                 }
1425         }
1426         push @comment, <$fd>;
1427         $tag{'comment'} = \@comment;
1428         close $fd or return;
1429         if (!defined $tag{'name'}) {
1430                 return
1431         };
1432         return %tag
1433 }
1434
1435 sub parse_commit_text {
1436         my ($commit_text, $withparents) = @_;
1437         my @commit_lines = split '\n', $commit_text;
1438         my %co;
1439
1440         pop @commit_lines; # Remove '\0'
1441
1442         if (! @commit_lines) {
1443                 return;
1444         }
1445
1446         my $header = shift @commit_lines;
1447         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1448                 return;
1449         }
1450         ($co{'id'}, my @parents) = split ' ', $header;
1451         while (my $line = shift @commit_lines) {
1452                 last if $line eq "\n";
1453                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1454                         $co{'tree'} = $1;
1455                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1456                         push @parents, $1;
1457                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1458                         $co{'author'} = $1;
1459                         $co{'author_epoch'} = $2;
1460                         $co{'author_tz'} = $3;
1461                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1462                                 $co{'author_name'}  = $1;
1463                                 $co{'author_email'} = $2;
1464                         } else {
1465                                 $co{'author_name'} = $co{'author'};
1466                         }
1467                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1468                         $co{'committer'} = $1;
1469                         $co{'committer_epoch'} = $2;
1470                         $co{'committer_tz'} = $3;
1471                         $co{'committer_name'} = $co{'committer'};
1472                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1473                                 $co{'committer_name'}  = $1;
1474                                 $co{'committer_email'} = $2;
1475                         } else {
1476                                 $co{'committer_name'} = $co{'committer'};
1477                         }
1478                 }
1479         }
1480         if (!defined $co{'tree'}) {
1481                 return;
1482         };
1483         $co{'parents'} = \@parents;
1484         $co{'parent'} = $parents[0];
1485
1486         foreach my $title (@commit_lines) {
1487                 $title =~ s/^    //;
1488                 if ($title ne "") {
1489                         $co{'title'} = chop_str($title, 80, 5);
1490                         # remove leading stuff of merges to make the interesting part visible
1491                         if (length($title) > 50) {
1492                                 $title =~ s/^Automatic //;
1493                                 $title =~ s/^merge (of|with) /Merge ... /i;
1494                                 if (length($title) > 50) {
1495                                         $title =~ s/(http|rsync):\/\///;
1496                                 }
1497                                 if (length($title) > 50) {
1498                                         $title =~ s/(master|www|rsync)\.//;
1499                                 }
1500                                 if (length($title) > 50) {
1501                                         $title =~ s/kernel.org:?//;
1502                                 }
1503                                 if (length($title) > 50) {
1504                                         $title =~ s/\/pub\/scm//;
1505                                 }
1506                         }
1507                         $co{'title_short'} = chop_str($title, 50, 5);
1508                         last;
1509                 }
1510         }
1511         if ($co{'title'} eq "") {
1512                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1513         }
1514         # remove added spaces
1515         foreach my $line (@commit_lines) {
1516                 $line =~ s/^    //;
1517         }
1518         $co{'comment'} = \@commit_lines;
1519
1520         my $age = time - $co{'committer_epoch'};
1521         $co{'age'} = $age;
1522         $co{'age_string'} = age_string($age);
1523         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1524         if ($age > 60*60*24*7*2) {
1525                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1526                 $co{'age_string_age'} = $co{'age_string'};
1527         } else {
1528                 $co{'age_string_date'} = $co{'age_string'};
1529                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1530         }
1531         return %co;
1532 }
1533
1534 sub parse_commit {
1535         my ($commit_id) = @_;
1536         my %co;
1537
1538         local $/ = "\0";
1539
1540         open my $fd, "-|", git_cmd(), "rev-list",
1541                 "--parents",
1542                 "--header",
1543                 "--max-count=1",
1544                 $commit_id,
1545                 "--",
1546                 or die_error(undef, "Open git-rev-list failed");
1547         %co = parse_commit_text(<$fd>, 1);
1548         close $fd;
1549
1550         return %co;
1551 }
1552
1553 sub parse_commits {
1554         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1555         my @cos;
1556
1557         $maxcount ||= 1;
1558         $skip ||= 0;
1559
1560         local $/ = "\0";
1561
1562         open my $fd, "-|", git_cmd(), "rev-list",
1563                 "--header",
1564                 ($arg ? ($arg) : ()),
1565                 ("--max-count=" . $maxcount),
1566                 ("--skip=" . $skip),
1567                 $commit_id,
1568                 "--",
1569                 ($filename ? ($filename) : ())
1570                 or die_error(undef, "Open git-rev-list failed");
1571         while (my $line = <$fd>) {
1572                 my %co = parse_commit_text($line);
1573                 push @cos, \%co;
1574         }
1575         close $fd;
1576
1577         return wantarray ? @cos : \@cos;
1578 }
1579
1580 # parse ref from ref_file, given by ref_id, with given type
1581 sub parse_ref {
1582         my $ref_file = shift;
1583         my $ref_id = shift;
1584         my $type = shift || git_get_type($ref_id);
1585         my %ref_item;
1586
1587         $ref_item{'type'} = $type;
1588         $ref_item{'id'} = $ref_id;
1589         $ref_item{'epoch'} = 0;
1590         $ref_item{'age'} = "unknown";
1591         if ($type eq "tag") {
1592                 my %tag = parse_tag($ref_id);
1593                 $ref_item{'comment'} = $tag{'comment'};
1594                 if ($tag{'type'} eq "commit") {
1595                         my %co = parse_commit($tag{'object'});
1596                         $ref_item{'epoch'} = $co{'committer_epoch'};
1597                         $ref_item{'age'} = $co{'age_string'};
1598                 } elsif (defined($tag{'epoch'})) {
1599                         my $age = time - $tag{'epoch'};
1600                         $ref_item{'epoch'} = $tag{'epoch'};
1601                         $ref_item{'age'} = age_string($age);
1602                 }
1603                 $ref_item{'reftype'} = $tag{'type'};
1604                 $ref_item{'name'} = $tag{'name'};
1605                 $ref_item{'refid'} = $tag{'object'};
1606         } elsif ($type eq "commit"){
1607                 my %co = parse_commit($ref_id);
1608                 $ref_item{'reftype'} = "commit";
1609                 $ref_item{'name'} = $ref_file;
1610                 $ref_item{'title'} = $co{'title'};
1611                 $ref_item{'refid'} = $ref_id;
1612                 $ref_item{'epoch'} = $co{'committer_epoch'};
1613                 $ref_item{'age'} = $co{'age_string'};
1614         } else {
1615                 $ref_item{'reftype'} = $type;
1616                 $ref_item{'name'} = $ref_file;
1617                 $ref_item{'refid'} = $ref_id;
1618         }
1619
1620         return %ref_item;
1621 }
1622
1623 # parse line of git-diff-tree "raw" output
1624 sub parse_difftree_raw_line {
1625         my $line = shift;
1626         my %res;
1627
1628         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1629         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1630         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1631                 $res{'from_mode'} = $1;
1632                 $res{'to_mode'} = $2;
1633                 $res{'from_id'} = $3;
1634                 $res{'to_id'} = $4;
1635                 $res{'status'} = $5;
1636                 $res{'similarity'} = $6;
1637                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1638                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1639                 } else {
1640                         $res{'file'} = unquote($7);
1641                 }
1642         }
1643         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1644         # combined diff (for merge commit)
1645         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1646                 $res{'nparents'}  = length($1);
1647                 $res{'from_mode'} = [ split(' ', $2) ];
1648                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1649                 $res{'from_id'} = [ split(' ', $3) ];
1650                 $res{'to_id'} = pop @{$res{'from_id'}};
1651                 $res{'status'} = [ split('', $4) ];
1652                 $res{'to_file'} = unquote($5);
1653         }
1654         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1655         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1656                 $res{'commit'} = $1;
1657         }
1658
1659         return wantarray ? %res : \%res;
1660 }
1661
1662 # parse line of git-ls-tree output
1663 sub parse_ls_tree_line ($;%) {
1664         my $line = shift;
1665         my %opts = @_;
1666         my %res;
1667
1668         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1669         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1670
1671         $res{'mode'} = $1;
1672         $res{'type'} = $2;
1673         $res{'hash'} = $3;
1674         if ($opts{'-z'}) {
1675                 $res{'name'} = $4;
1676         } else {
1677                 $res{'name'} = unquote($4);
1678         }
1679
1680         return wantarray ? %res : \%res;
1681 }
1682
1683 ## ......................................................................
1684 ## parse to array of hashes functions
1685
1686 sub git_get_heads_list {
1687         my $limit = shift;
1688         my @headslist;
1689
1690         open my $fd, '-|', git_cmd(), 'for-each-ref',
1691                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1692                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1693                 'refs/heads'
1694                 or return;
1695         while (my $line = <$fd>) {
1696                 my %ref_item;
1697
1698                 chomp $line;
1699                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1700                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1701                 my ($committer, $epoch, $tz) =
1702                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1703                 $name =~ s!^refs/heads/!!;
1704
1705                 $ref_item{'name'}  = $name;
1706                 $ref_item{'id'}    = $hash;
1707                 $ref_item{'title'} = $title || '(no commit message)';
1708                 $ref_item{'epoch'} = $epoch;
1709                 if ($epoch) {
1710                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1711                 } else {
1712                         $ref_item{'age'} = "unknown";
1713                 }
1714
1715                 push @headslist, \%ref_item;
1716         }
1717         close $fd;
1718
1719         return wantarray ? @headslist : \@headslist;
1720 }
1721
1722 sub git_get_tags_list {
1723         my $limit = shift;
1724         my @tagslist;
1725
1726         open my $fd, '-|', git_cmd(), 'for-each-ref',
1727                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1728                 '--format=%(objectname) %(objecttype) %(refname) '.
1729                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1730                 'refs/tags'
1731                 or return;
1732         while (my $line = <$fd>) {
1733                 my %ref_item;
1734
1735                 chomp $line;
1736                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1737                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1738                 my ($creator, $epoch, $tz) =
1739                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1740                 $name =~ s!^refs/tags/!!;
1741
1742                 $ref_item{'type'} = $type;
1743                 $ref_item{'id'} = $id;
1744                 $ref_item{'name'} = $name;
1745                 if ($type eq "tag") {
1746                         $ref_item{'subject'} = $title;
1747                         $ref_item{'reftype'} = $reftype;
1748                         $ref_item{'refid'}   = $refid;
1749                 } else {
1750                         $ref_item{'reftype'} = $type;
1751                         $ref_item{'refid'}   = $id;
1752                 }
1753
1754                 if ($type eq "tag" || $type eq "commit") {
1755                         $ref_item{'epoch'} = $epoch;
1756                         if ($epoch) {
1757                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1758                         } else {
1759                                 $ref_item{'age'} = "unknown";
1760                         }
1761                 }
1762
1763                 push @tagslist, \%ref_item;
1764         }
1765         close $fd;
1766
1767         return wantarray ? @tagslist : \@tagslist;
1768 }
1769
1770 ## ----------------------------------------------------------------------
1771 ## filesystem-related functions
1772
1773 sub get_file_owner {
1774         my $path = shift;
1775
1776         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1777         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1778         if (!defined $gcos) {
1779                 return undef;
1780         }
1781         my $owner = $gcos;
1782         $owner =~ s/[,;].*$//;
1783         return to_utf8($owner);
1784 }
1785
1786 ## ......................................................................
1787 ## mimetype related functions
1788
1789 sub mimetype_guess_file {
1790         my $filename = shift;
1791         my $mimemap = shift;
1792         -r $mimemap or return undef;
1793
1794         my %mimemap;
1795         open(MIME, $mimemap) or return undef;
1796         while (<MIME>) {
1797                 next if m/^#/; # skip comments
1798                 my ($mime, $exts) = split(/\t+/);
1799                 if (defined $exts) {
1800                         my @exts = split(/\s+/, $exts);
1801                         foreach my $ext (@exts) {
1802                                 $mimemap{$ext} = $mime;
1803                         }
1804                 }
1805         }
1806         close(MIME);
1807
1808         $filename =~ /\.([^.]*)$/;
1809         return $mimemap{$1};
1810 }
1811
1812 sub mimetype_guess {
1813         my $filename = shift;
1814         my $mime;
1815         $filename =~ /\./ or return undef;
1816
1817         if ($mimetypes_file) {
1818                 my $file = $mimetypes_file;
1819                 if ($file !~ m!^/!) { # if it is relative path
1820                         # it is relative to project
1821                         $file = "$projectroot/$project/$file";
1822                 }
1823                 $mime = mimetype_guess_file($filename, $file);
1824         }
1825         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1826         return $mime;
1827 }
1828
1829 sub blob_mimetype {
1830         my $fd = shift;
1831         my $filename = shift;
1832
1833         if ($filename) {
1834                 my $mime = mimetype_guess($filename);
1835                 $mime and return $mime;
1836         }
1837
1838         # just in case
1839         return $default_blob_plain_mimetype unless $fd;
1840
1841         if (-T $fd) {
1842                 return 'text/plain' .
1843                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1844         } elsif (! $filename) {
1845                 return 'application/octet-stream';
1846         } elsif ($filename =~ m/\.png$/i) {
1847                 return 'image/png';
1848         } elsif ($filename =~ m/\.gif$/i) {
1849                 return 'image/gif';
1850         } elsif ($filename =~ m/\.jpe?g$/i) {
1851                 return 'image/jpeg';
1852         } else {
1853                 return 'application/octet-stream';
1854         }
1855 }
1856
1857 ## ======================================================================
1858 ## functions printing HTML: header, footer, error page
1859
1860 sub git_header_html {
1861         my $status = shift || "200 OK";
1862         my $expires = shift;
1863
1864         my $title = "$site_name";
1865         if (defined $project) {
1866                 $title .= " - " . to_utf8($project);
1867                 if (defined $action) {
1868                         $title .= "/$action";
1869                         if (defined $file_name) {
1870                                 $title .= " - " . esc_path($file_name);
1871                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1872                                         $title .= "/";
1873                                 }
1874                         }
1875                 }
1876         }
1877         my $content_type;
1878         # require explicit support from the UA if we are to send the page as
1879         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1880         # we have to do this because MSIE sometimes globs '*/*', pretending to
1881         # support xhtml+xml but choking when it gets what it asked for.
1882         if (defined $cgi->http('HTTP_ACCEPT') &&
1883             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1884             $cgi->Accept('application/xhtml+xml') != 0) {
1885                 $content_type = 'application/xhtml+xml';
1886         } else {
1887                 $content_type = 'text/html';
1888         }
1889         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1890                            -status=> $status, -expires => $expires);
1891         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1892         print <<EOF;
1893 <?xml version="1.0" encoding="utf-8"?>
1894 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1895 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1896 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1897 <!-- git core binaries version $git_version -->
1898 <head>
1899 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1900 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1901 <meta name="robots" content="index, nofollow"/>
1902 <title>$title</title>
1903 EOF
1904 # print out each stylesheet that exist
1905         if (defined $stylesheet) {
1906 #provides backwards capability for those people who define style sheet in a config file
1907                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1908         } else {
1909                 foreach my $stylesheet (@stylesheets) {
1910                         next unless $stylesheet;
1911                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1912                 }
1913         }
1914         if (defined $project) {
1915                 printf('<link rel="alternate" title="%s log RSS feed" '.
1916                        'href="%s" type="application/rss+xml" />'."\n",
1917                        esc_param($project), href(action=>"rss"));
1918                 printf('<link rel="alternate" title="%s log Atom feed" '.
1919                        'href="%s" type="application/atom+xml" />'."\n",
1920                        esc_param($project), href(action=>"atom"));
1921         } else {
1922                 printf('<link rel="alternate" title="%s projects list" '.
1923                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1924                        $site_name, href(project=>undef, action=>"project_index"));
1925                 printf('<link rel="alternate" title="%s projects feeds" '.
1926                        'href="%s" type="text/x-opml"/>'."\n",
1927                        $site_name, href(project=>undef, action=>"opml"));
1928         }
1929         if (defined $favicon) {
1930                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1931         }
1932
1933         print "</head>\n" .
1934               "<body>\n";
1935
1936         if (-f $site_header) {
1937                 open (my $fd, $site_header);
1938                 print <$fd>;
1939                 close $fd;
1940         }
1941
1942         print "<div class=\"page_header\">\n" .
1943               $cgi->a({-href => esc_url($logo_url),
1944                        -title => $logo_label},
1945                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1946         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1947         if (defined $project) {
1948                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1949                 if (defined $action) {
1950                         print " / $action";
1951                 }
1952                 print "\n";
1953         }
1954         print "</div>\n";
1955
1956         my ($have_search) = gitweb_check_feature('search');
1957         if ((defined $project) && ($have_search)) {
1958                 if (!defined $searchtext) {
1959                         $searchtext = "";
1960                 }
1961                 my $search_hash;
1962                 if (defined $hash_base) {
1963                         $search_hash = $hash_base;
1964                 } elsif (defined $hash) {
1965                         $search_hash = $hash;
1966                 } else {
1967                         $search_hash = "HEAD";
1968                 }
1969                 $cgi->param("a", "search");
1970                 $cgi->param("h", $search_hash);
1971                 $cgi->param("p", $project);
1972                 print $cgi->startform(-method => "get", -action => $my_uri) .
1973                       "<div class=\"search\">\n" .
1974                       $cgi->hidden(-name => "p") . "\n" .
1975                       $cgi->hidden(-name => "a") . "\n" .
1976                       $cgi->hidden(-name => "h") . "\n" .
1977                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1978                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
1979                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1980                       " search:\n",
1981                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1982                       "</div>" .
1983                       $cgi->end_form() . "\n";
1984         }
1985 }
1986
1987 sub git_footer_html {
1988         print "<div class=\"page_footer\">\n";
1989         if (defined $project) {
1990                 my $descr = git_get_project_description($project);
1991                 if (defined $descr) {
1992                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1993                 }
1994                 print $cgi->a({-href => href(action=>"rss"),
1995                               -class => "rss_logo"}, "RSS") . " ";
1996                 print $cgi->a({-href => href(action=>"atom"),
1997                               -class => "rss_logo"}, "Atom") . "\n";
1998         } else {
1999                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2000                               -class => "rss_logo"}, "OPML") . " ";
2001                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2002                               -class => "rss_logo"}, "TXT") . "\n";
2003         }
2004         print "</div>\n" ;
2005
2006         if (-f $site_footer) {
2007                 open (my $fd, $site_footer);
2008                 print <$fd>;
2009                 close $fd;
2010         }
2011
2012         print "</body>\n" .
2013               "</html>";
2014 }
2015
2016 sub die_error {
2017         my $status = shift || "403 Forbidden";
2018         my $error = shift || "Malformed query, file missing or permission denied";
2019
2020         git_header_html($status);
2021         print <<EOF;
2022 <div class="page_body">
2023 <br /><br />
2024 $status - $error
2025 <br />
2026 </div>
2027 EOF
2028         git_footer_html();
2029         exit;
2030 }
2031
2032 ## ----------------------------------------------------------------------
2033 ## functions printing or outputting HTML: navigation
2034
2035 sub git_print_page_nav {
2036         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2037         $extra = '' if !defined $extra; # pager or formats
2038
2039         my @navs = qw(summary shortlog log commit commitdiff tree);
2040         if ($suppress) {
2041                 @navs = grep { $_ ne $suppress } @navs;
2042         }
2043
2044         my %arg = map { $_ => {action=>$_} } @navs;
2045         if (defined $head) {
2046                 for (qw(commit commitdiff)) {
2047                         $arg{$_}{'hash'} = $head;
2048                 }
2049                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2050                         for (qw(shortlog log)) {
2051                                 $arg{$_}{'hash'} = $head;
2052                         }
2053                 }
2054         }
2055         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2056         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2057
2058         print "<div class=\"page_nav\">\n" .
2059                 (join " | ",
2060                  map { $_ eq $current ?
2061                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2062                  } @navs);
2063         print "<br/>\n$extra<br/>\n" .
2064               "</div>\n";
2065 }
2066
2067 sub format_paging_nav {
2068         my ($action, $hash, $head, $page, $nrevs) = @_;
2069         my $paging_nav;
2070
2071
2072         if ($hash ne $head || $page) {
2073                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2074         } else {
2075                 $paging_nav .= "HEAD";
2076         }
2077
2078         if ($page > 0) {
2079                 $paging_nav .= " &sdot; " .
2080                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2081                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2082         } else {
2083                 $paging_nav .= " &sdot; prev";
2084         }
2085
2086         if ($nrevs >= (100 * ($page+1)-1)) {
2087                 $paging_nav .= " &sdot; " .
2088                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2089                                  -accesskey => "n", -title => "Alt-n"}, "next");
2090         } else {
2091                 $paging_nav .= " &sdot; next";
2092         }
2093
2094         return $paging_nav;
2095 }
2096
2097 ## ......................................................................
2098 ## functions printing or outputting HTML: div
2099
2100 sub git_print_header_div {
2101         my ($action, $title, $hash, $hash_base) = @_;
2102         my %args = ();
2103
2104         $args{'action'} = $action;
2105         $args{'hash'} = $hash if $hash;
2106         $args{'hash_base'} = $hash_base if $hash_base;
2107
2108         print "<div class=\"header\">\n" .
2109               $cgi->a({-href => href(%args), -class => "title"},
2110               $title ? $title : $action) .
2111               "\n</div>\n";
2112 }
2113
2114 #sub git_print_authorship (\%) {
2115 sub git_print_authorship {
2116         my $co = shift;
2117
2118         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2119         print "<div class=\"author_date\">" .
2120               esc_html($co->{'author_name'}) .
2121               " [$ad{'rfc2822'}";
2122         if ($ad{'hour_local'} < 6) {
2123                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2124                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2125         } else {
2126                 printf(" (%02d:%02d %s)",
2127                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2128         }
2129         print "]</div>\n";
2130 }
2131
2132 sub git_print_page_path {
2133         my $name = shift;
2134         my $type = shift;
2135         my $hb = shift;
2136
2137
2138         print "<div class=\"page_path\">";
2139         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2140                       -title => 'tree root'}, to_utf8("[$project]"));
2141         print " / ";
2142         if (defined $name) {
2143                 my @dirname = split '/', $name;
2144                 my $basename = pop @dirname;
2145                 my $fullname = '';
2146
2147                 foreach my $dir (@dirname) {
2148                         $fullname .= ($fullname ? '/' : '') . $dir;
2149                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2150                                                      hash_base=>$hb),
2151                                       -title => $fullname}, esc_path($dir));
2152                         print " / ";
2153                 }
2154                 if (defined $type && $type eq 'blob') {
2155                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2156                                                      hash_base=>$hb),
2157                                       -title => $name}, esc_path($basename));
2158                 } elsif (defined $type && $type eq 'tree') {
2159                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2160                                                      hash_base=>$hb),
2161                                       -title => $name}, esc_path($basename));
2162                         print " / ";
2163                 } else {
2164                         print esc_path($basename);
2165                 }
2166         }
2167         print "<br/></div>\n";
2168 }
2169
2170 # sub git_print_log (\@;%) {
2171 sub git_print_log ($;%) {
2172         my $log = shift;
2173         my %opts = @_;
2174
2175         if ($opts{'-remove_title'}) {
2176                 # remove title, i.e. first line of log
2177                 shift @$log;
2178         }
2179         # remove leading empty lines
2180         while (defined $log->[0] && $log->[0] eq "") {
2181                 shift @$log;
2182         }
2183
2184         # print log
2185         my $signoff = 0;
2186         my $empty = 0;
2187         foreach my $line (@$log) {
2188                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2189                         $signoff = 1;
2190                         $empty = 0;
2191                         if (! $opts{'-remove_signoff'}) {
2192                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2193                                 next;
2194                         } else {
2195                                 # remove signoff lines
2196                                 next;
2197                         }
2198                 } else {
2199                         $signoff = 0;
2200                 }
2201
2202                 # print only one empty line
2203                 # do not print empty line after signoff
2204                 if ($line eq "") {
2205                         next if ($empty || $signoff);
2206                         $empty = 1;
2207                 } else {
2208                         $empty = 0;
2209                 }
2210
2211                 print format_log_line_html($line) . "<br/>\n";
2212         }
2213
2214         if ($opts{'-final_empty_line'}) {
2215                 # end with single empty line
2216                 print "<br/>\n" unless $empty;
2217         }
2218 }
2219
2220 # return link target (what link points to)
2221 sub git_get_link_target {
2222         my $hash = shift;
2223         my $link_target;
2224
2225         # read link
2226         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2227                 or return;
2228         {
2229                 local $/;
2230                 $link_target = <$fd>;
2231         }
2232         close $fd
2233                 or return;
2234
2235         return $link_target;
2236 }
2237
2238 # given link target, and the directory (basedir) the link is in,
2239 # return target of link relative to top directory (top tree);
2240 # return undef if it is not possible (including absolute links).
2241 sub normalize_link_target {
2242         my ($link_target, $basedir, $hash_base) = @_;
2243
2244         # we can normalize symlink target only if $hash_base is provided
2245         return unless $hash_base;
2246
2247         # absolute symlinks (beginning with '/') cannot be normalized
2248         return if (substr($link_target, 0, 1) eq '/');
2249
2250         # normalize link target to path from top (root) tree (dir)
2251         my $path;
2252         if ($basedir) {
2253                 $path = $basedir . '/' . $link_target;
2254         } else {
2255                 # we are in top (root) tree (dir)
2256                 $path = $link_target;
2257         }
2258
2259         # remove //, /./, and /../
2260         my @path_parts;
2261         foreach my $part (split('/', $path)) {
2262                 # discard '.' and ''
2263                 next if (!$part || $part eq '.');
2264                 # handle '..'
2265                 if ($part eq '..') {
2266                         if (@path_parts) {
2267                                 pop @path_parts;
2268                         } else {
2269                                 # link leads outside repository (outside top dir)
2270                                 return;
2271                         }
2272                 } else {
2273                         push @path_parts, $part;
2274                 }
2275         }
2276         $path = join('/', @path_parts);
2277
2278         return $path;
2279 }
2280
2281 # print tree entry (row of git_tree), but without encompassing <tr> element
2282 sub git_print_tree_entry {
2283         my ($t, $basedir, $hash_base, $have_blame) = @_;
2284
2285         my %base_key = ();
2286         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2287
2288         # The format of a table row is: mode list link.  Where mode is
2289         # the mode of the entry, list is the name of the entry, an href,
2290         # and link is the action links of the entry.
2291
2292         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2293         if ($t->{'type'} eq "blob") {
2294                 print "<td class=\"list\">" .
2295                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2296                                                file_name=>"$basedir$t->{'name'}", %base_key),
2297                                 -class => "list"}, esc_path($t->{'name'}));
2298                 if (S_ISLNK(oct $t->{'mode'})) {
2299                         my $link_target = git_get_link_target($t->{'hash'});
2300                         if ($link_target) {
2301                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2302                                 if (defined $norm_target) {
2303                                         print " -> " .
2304                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2305                                                                      file_name=>$norm_target),
2306                                                        -title => $norm_target}, esc_path($link_target));
2307                                 } else {
2308                                         print " -> " . esc_path($link_target);
2309                                 }
2310                         }
2311                 }
2312                 print "</td>\n";
2313                 print "<td class=\"link\">";
2314                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2315                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2316                               "blob");
2317                 if ($have_blame) {
2318                         print " | " .
2319                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2320                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2321                                       "blame");
2322                 }
2323                 if (defined $hash_base) {
2324                         print " | " .
2325                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2326                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2327                                       "history");
2328                 }
2329                 print " | " .
2330                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2331                                                file_name=>"$basedir$t->{'name'}")},
2332                                 "raw");
2333                 print "</td>\n";
2334
2335         } elsif ($t->{'type'} eq "tree") {
2336                 print "<td class=\"list\">";
2337                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2338                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2339                               esc_path($t->{'name'}));
2340                 print "</td>\n";
2341                 print "<td class=\"link\">";
2342                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2343                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2344                               "tree");
2345                 if (defined $hash_base) {
2346                         print " | " .
2347                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2348                                                      file_name=>"$basedir$t->{'name'}")},
2349                                       "history");
2350                 }
2351                 print "</td>\n";
2352         }
2353 }
2354
2355 ## ......................................................................
2356 ## functions printing large fragments of HTML
2357
2358 sub fill_from_file_info {
2359         my ($diff, @parents) = @_;
2360
2361         $diff->{'from_file'} = [ ];
2362         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2363         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2364                 if ($diff->{'status'}[$i] eq 'R' ||
2365                     $diff->{'status'}[$i] eq 'C') {
2366                         $diff->{'from_file'}[$i] =
2367                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2368                 }
2369         }
2370
2371         return $diff;
2372 }
2373
2374 # parameters can be strings, or references to arrays of strings
2375 sub from_ids_eq {
2376         my ($a, $b) = @_;
2377
2378         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2379                 for (my $i = 0; $i < @$a; ++$i) {
2380                         return 0 unless ($a->[$i] eq $b->[$i]);
2381                 }
2382                 return 1;
2383         } elsif (!ref($a) && !ref($b)) {
2384                 return $a eq $b;
2385         } else {
2386                 return 0;
2387         }
2388 }
2389
2390
2391 sub git_difftree_body {
2392         my ($difftree, $hash, @parents) = @_;
2393         my ($parent) = $parents[0];
2394         my ($have_blame) = gitweb_check_feature('blame');
2395         print "<div class=\"list_head\">\n";
2396         if ($#{$difftree} > 10) {
2397                 print(($#{$difftree} + 1) . " files changed:\n");
2398         }
2399         print "</div>\n";
2400
2401         print "<table class=\"" .
2402               (@parents > 1 ? "combined " : "") .
2403               "diff_tree\">\n";
2404
2405         # header only for combined diff in 'commitdiff' view
2406         my $has_header = @parents > 1 && $action eq 'commitdiff';
2407         if ($has_header) {
2408                 # table header
2409                 print "<thead><tr>\n" .
2410                        "<th></th><th></th>\n"; # filename, patchN link
2411                 for (my $i = 0; $i < @parents; $i++) {
2412                         my $par = $parents[$i];
2413                         print "<th>" .
2414                               $cgi->a({-href => href(action=>"commitdiff",
2415                                                      hash=>$hash, hash_parent=>$par),
2416                                        -title => 'commitdiff to parent number ' .
2417                                                   ($i+1) . ': ' . substr($par,0,7)},
2418                                       $i+1) .
2419                               "&nbsp;</th>\n";
2420                 }
2421                 print "</tr></thead>\n<tbody>\n";
2422         }
2423
2424         my $alternate = 1;
2425         my $patchno = 0;
2426         foreach my $line (@{$difftree}) {
2427                 my $diff;
2428                 if (ref($line) eq "HASH") {
2429                         # pre-parsed (or generated by hand)
2430                         $diff = $line;
2431                 } else {
2432                         $diff = parse_difftree_raw_line($line);
2433                 }
2434
2435                 if ($alternate) {
2436                         print "<tr class=\"dark\">\n";
2437                 } else {
2438                         print "<tr class=\"light\">\n";
2439                 }
2440                 $alternate ^= 1;
2441
2442                 if (exists $diff->{'nparents'}) { # combined diff
2443
2444                         fill_from_file_info($diff, @parents)
2445                                 unless exists $diff->{'from_file'};
2446
2447                         if ($diff->{'to_id'} ne ('0' x 40)) {
2448                                 # file exists in the result (child) commit
2449                                 print "<td>" .
2450                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2451                                                              file_name=>$diff->{'to_file'},
2452                                                              hash_base=>$hash),
2453                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2454                                       "</td>\n";
2455                         } else {
2456                                 print "<td>" .
2457                                       esc_path($diff->{'to_file'}) .
2458                                       "</td>\n";
2459                         }
2460
2461                         if ($action eq 'commitdiff') {
2462                                 # link to patch
2463                                 $patchno++;
2464                                 print "<td class=\"link\">" .
2465                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2466                                       " | " .
2467                                       "</td>\n";
2468                         }
2469
2470                         my $has_history = 0;
2471                         my $not_deleted = 0;
2472                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2473                                 my $hash_parent = $parents[$i];
2474                                 my $from_hash = $diff->{'from_id'}[$i];
2475                                 my $from_path = $diff->{'from_file'}[$i];
2476                                 my $status = $diff->{'status'}[$i];
2477
2478                                 $has_history ||= ($status ne 'A');
2479                                 $not_deleted ||= ($status ne 'D');
2480
2481                                 if ($status eq 'A') {
2482                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2483                                 } elsif ($status eq 'D') {
2484                                         print "<td class=\"link\">" .
2485                                               $cgi->a({-href => href(action=>"blob",
2486                                                                      hash_base=>$hash,
2487                                                                      hash=>$from_hash,
2488                                                                      file_name=>$from_path)},
2489                                                       "blob" . ($i+1)) .
2490                                               " | </td>\n";
2491                                 } else {
2492                                         if ($diff->{'to_id'} eq $from_hash) {
2493                                                 print "<td class=\"link nochange\">";
2494                                         } else {
2495                                                 print "<td class=\"link\">";
2496                                         }
2497                                         print $cgi->a({-href => href(action=>"blobdiff",
2498                                                                      hash=>$diff->{'to_id'},
2499                                                                      hash_parent=>$from_hash,
2500                                                                      hash_base=>$hash,
2501                                                                      hash_parent_base=>$hash_parent,
2502                                                                      file_name=>$diff->{'to_file'},
2503                                                                      file_parent=>$from_path)},
2504                                                       "diff" . ($i+1)) .
2505                                               " | </td>\n";
2506                                 }
2507                         }
2508
2509                         print "<td class=\"link\">";
2510                         if ($not_deleted) {
2511                                 print $cgi->a({-href => href(action=>"blob",
2512                                                              hash=>$diff->{'to_id'},
2513                                                              file_name=>$diff->{'to_file'},
2514                                                              hash_base=>$hash)},
2515                                               "blob");
2516                                 print " | " if ($has_history);
2517                         }
2518                         if ($has_history) {
2519                                 print $cgi->a({-href => href(action=>"history",
2520                                                              file_name=>$diff->{'to_file'},
2521                                                              hash_base=>$hash)},
2522                                               "history");
2523                         }
2524                         print "</td>\n";
2525
2526                         print "</tr>\n";
2527                         next; # instead of 'else' clause, to avoid extra indent
2528                 }
2529                 # else ordinary diff
2530
2531                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2532                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2533                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2534                         $to_mode_oct = oct $diff->{'to_mode'};
2535                         if (S_ISREG($to_mode_oct)) { # only for regular file
2536                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2537                         }
2538                         $to_file_type = file_type($diff->{'to_mode'});
2539                 }
2540                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2541                         $from_mode_oct = oct $diff->{'from_mode'};
2542                         if (S_ISREG($to_mode_oct)) { # only for regular file
2543                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2544                         }
2545                         $from_file_type = file_type($diff->{'from_mode'});
2546                 }
2547
2548                 if ($diff->{'status'} eq "A") { # created
2549                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2550                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2551                         $mode_chng   .= "]</span>";
2552                         print "<td>";
2553                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2554                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2555                                       -class => "list"}, esc_path($diff->{'file'}));
2556                         print "</td>\n";
2557                         print "<td>$mode_chng</td>\n";
2558                         print "<td class=\"link\">";
2559                         if ($action eq 'commitdiff') {
2560                                 # link to patch
2561                                 $patchno++;
2562                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2563                                 print " | ";
2564                         }
2565                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2566                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2567                                       "blob");
2568                         print "</td>\n";
2569
2570                 } elsif ($diff->{'status'} eq "D") { # deleted
2571                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2572                         print "<td>";
2573                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2574                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2575                                        -class => "list"}, esc_path($diff->{'file'}));
2576                         print "</td>\n";
2577                         print "<td>$mode_chng</td>\n";
2578                         print "<td class=\"link\">";
2579                         if ($action eq 'commitdiff') {
2580                                 # link to patch
2581                                 $patchno++;
2582                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2583                                 print " | ";
2584                         }
2585                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2586                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2587                                       "blob") . " | ";
2588                         if ($have_blame) {
2589                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2590                                                              file_name=>$diff->{'file'})},
2591                                               "blame") . " | ";
2592                         }
2593                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2594                                                      file_name=>$diff->{'file'})},
2595                                       "history");
2596                         print "</td>\n";
2597
2598                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2599                         my $mode_chnge = "";
2600                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2601                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2602                                 if ($from_file_type ne $to_file_type) {
2603                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2604                                 }
2605                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2606                                         if ($from_mode_str && $to_mode_str) {
2607                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2608                                         } elsif ($to_mode_str) {
2609                                                 $mode_chnge .= " mode: $to_mode_str";
2610                                         }
2611                                 }
2612                                 $mode_chnge .= "]</span>\n";
2613                         }
2614                         print "<td>";
2615                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2616                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2617                                       -class => "list"}, esc_path($diff->{'file'}));
2618                         print "</td>\n";
2619                         print "<td>$mode_chnge</td>\n";
2620                         print "<td class=\"link\">";
2621                         if ($action eq 'commitdiff') {
2622                                 # link to patch
2623                                 $patchno++;
2624                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2625                                       " | ";
2626                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2627                                 # "commit" view and modified file (not onlu mode changed)
2628                                 print $cgi->a({-href => href(action=>"blobdiff",
2629                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2630                                                              hash_base=>$hash, hash_parent_base=>$parent,
2631                                                              file_name=>$diff->{'file'})},
2632                                               "diff") .
2633                                       " | ";
2634                         }
2635                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2636                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2637                                        "blob") . " | ";
2638                         if ($have_blame) {
2639                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2640                                                              file_name=>$diff->{'file'})},
2641                                               "blame") . " | ";
2642                         }
2643                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2644                                                      file_name=>$diff->{'file'})},
2645                                       "history");
2646                         print "</td>\n";
2647
2648                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2649                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2650                         my $nstatus = $status_name{$diff->{'status'}};
2651                         my $mode_chng = "";
2652                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2653                                 # mode also for directories, so we cannot use $to_mode_str
2654                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2655                         }
2656                         print "<td>" .
2657                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2658                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2659                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2660                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2661                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2662                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2663                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2664                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2665                               "<td class=\"link\">";
2666                         if ($action eq 'commitdiff') {
2667                                 # link to patch
2668                                 $patchno++;
2669                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2670                                       " | ";
2671                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2672                                 # "commit" view and modified file (not only pure rename or copy)
2673                                 print $cgi->a({-href => href(action=>"blobdiff",
2674                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2675                                                              hash_base=>$hash, hash_parent_base=>$parent,
2676                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2677                                               "diff") .
2678                                       " | ";
2679                         }
2680                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2681                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2682                                       "blob") . " | ";
2683                         if ($have_blame) {
2684                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2685                                                              file_name=>$diff->{'to_file'})},
2686                                               "blame") . " | ";
2687                         }
2688                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2689                                                     file_name=>$diff->{'to_file'})},
2690                                       "history");
2691                         print "</td>\n";
2692
2693                 } # we should not encounter Unmerged (U) or Unknown (X) status
2694                 print "</tr>\n";
2695         }
2696         print "</tbody>" if $has_header;
2697         print "</table>\n";
2698 }
2699
2700 sub git_patchset_body {
2701         my ($fd, $difftree, $hash, @hash_parents) = @_;
2702         my ($hash_parent) = $hash_parents[0];
2703
2704         my $patch_idx = 0;
2705         my $patch_number = 0;
2706         my $patch_line;
2707         my $diffinfo;
2708         my (%from, %to);
2709
2710         print "<div class=\"patchset\">\n";
2711
2712         # skip to first patch
2713         while ($patch_line = <$fd>) {
2714                 chomp $patch_line;
2715
2716                 last if ($patch_line =~ m/^diff /);
2717         }
2718
2719  PATCH:
2720         while ($patch_line) {
2721                 my @diff_header;
2722                 my ($from_id, $to_id);
2723
2724                 # git diff header
2725                 #assert($patch_line =~ m/^diff /) if DEBUG;
2726                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2727                 $patch_number++;
2728                 push @diff_header, $patch_line;
2729
2730                 # extended diff header
2731         EXTENDED_HEADER:
2732                 while ($patch_line = <$fd>) {
2733                         chomp $patch_line;
2734
2735                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2736
2737                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2738                                 $from_id = $1;
2739                                 $to_id   = $2;
2740                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2741                                 $from_id = [ split(',', $1) ];
2742                                 $to_id   = $2;
2743                         }
2744
2745                         push @diff_header, $patch_line;
2746                 }
2747                 my $last_patch_line = $patch_line;
2748
2749                 # check if current patch belong to current raw line
2750                 # and parse raw git-diff line if needed
2751                 if (defined $diffinfo &&
2752                     defined $from_id && defined $to_id &&
2753                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2754                     $diffinfo->{'to_id'} eq $to_id) {
2755                         # this is continuation of a split patch
2756                         print "<div class=\"patch cont\">\n";
2757                 } else {
2758                         # advance raw git-diff output if needed
2759                         $patch_idx++ if defined $diffinfo;
2760
2761                         # read and prepare patch information
2762                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2763                                 # pre-parsed (or generated by hand)
2764                                 $diffinfo = $difftree->[$patch_idx];
2765                         } else {
2766                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2767                         }
2768                         if ($diffinfo->{'nparents'}) {
2769                                 # combined diff
2770                                 $from{'file'} = [];
2771                                 $from{'href'} = [];
2772                                 fill_from_file_info($diffinfo, @hash_parents)
2773                                         unless exists $diffinfo->{'from_file'};
2774                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2775                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2776                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2777                                                 $from{'href'}[$i] = href(action=>"blob",
2778                                                                          hash_base=>$hash_parents[$i],
2779                                                                          hash=>$diffinfo->{'from_id'}[$i],
2780                                                                          file_name=>$from{'file'}[$i]);
2781                                         } else {
2782                                                 $from{'href'}[$i] = undef;
2783                                         }
2784                                 }
2785                         } else {
2786                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2787                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2788                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2789                                                              hash=>$diffinfo->{'from_id'},
2790                                                              file_name=>$from{'file'});
2791                                 } else {
2792                                         delete $from{'href'};
2793                                 }
2794                         }
2795
2796                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2797                         if ($diffinfo->{'to_id'} ne ('0' x 40)) { # file exists in result
2798                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2799                                                    hash=>$diffinfo->{'to_id'},
2800                                                    file_name=>$to{'file'});
2801                         } else {
2802                                 delete $to{'href'};
2803                         }
2804                         # this is first patch for raw difftree line with $patch_idx index
2805                         # we index @$difftree array from 0, but number patches from 1
2806                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2807                 }
2808
2809                 # print "git diff" header
2810                 $patch_line = shift @diff_header;
2811                 if ($diffinfo->{'nparents'}) {
2812
2813                         # combined diff
2814                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2815                         if ($to{'href'}) {
2816                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2817                                                        esc_path($to{'file'}));
2818                         } else { # file was deleted
2819                                 $patch_line .= esc_path($to{'file'});
2820                         }
2821
2822                 } else {
2823
2824                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2825                         if ($from{'href'}) {
2826                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2827                                                        'a/' . esc_path($from{'file'}));
2828                         } else { # file was added
2829                                 $patch_line .= 'a/' . esc_path($from{'file'});
2830                         }
2831                         $patch_line .= ' ';
2832                         if ($to{'href'}) {
2833                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2834                                                        'b/' . esc_path($to{'file'}));
2835                         } else { # file was deleted
2836                                 $patch_line .= 'b/' . esc_path($to{'file'});
2837                         }
2838
2839                 }
2840                 print "<div class=\"diff header\">$patch_line</div>\n";
2841
2842                 # print extended diff header
2843                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2844         EXTENDED_HEADER:
2845                 foreach $patch_line (@diff_header) {
2846                         # match <path>
2847                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2848                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2849                                                        esc_path($from{'file'}));
2850                         }
2851                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2852                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2853                                                        esc_path($to{'file'}));
2854                         }
2855                         # match single <mode>
2856                         if ($patch_line =~ m/\s(\d{6})$/) {
2857                                 $patch_line .= '<span class="info"> (' .
2858                                                file_type_long($1) .
2859                                                ')</span>';
2860                         }
2861                         # match <hash>
2862                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2863                                 # can match only for combined diff
2864                                 $patch_line = 'index ';
2865                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2866                                         if ($from{'href'}[$i]) {
2867                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2868                                                                         -class=>"hash"},
2869                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2870                                         } else {
2871                                                 $patch_line .= '0' x 7;
2872                                         }
2873                                         # separator
2874                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2875                                 }
2876                                 $patch_line .= '..';
2877                                 if ($to{'href'}) {
2878                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2879                                                                substr($diffinfo->{'to_id'},0,7));
2880                                 } else {
2881                                         $patch_line .= '0' x 7;
2882                                 }
2883
2884                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2885                                 # can match only for ordinary diff
2886                                 my ($from_link, $to_link);
2887                                 if ($from{'href'}) {
2888                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2889                                                              substr($diffinfo->{'from_id'},0,7));
2890                                 } else {
2891                                         $from_link = '0' x 7;
2892                                 }
2893                                 if ($to{'href'}) {
2894                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2895                                                            substr($diffinfo->{'to_id'},0,7));
2896                                 } else {
2897                                         $to_link = '0' x 7;
2898                                 }
2899                                 #affirm {
2900                                 #       my ($from_hash, $to_hash) =
2901                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2902                                 #       my ($from_id, $to_id) =
2903                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2904                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2905                                 #} if DEBUG;
2906                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2907                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2908                         }
2909                         print $patch_line . "<br/>\n";
2910                 }
2911                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2912
2913                 # from-file/to-file diff header
2914                 $patch_line = $last_patch_line;
2915                 if (! $patch_line) {
2916                         print "</div>\n"; # class="patch"
2917                         last PATCH;
2918                 }
2919                 next PATCH if ($patch_line =~ m/^diff /);
2920                 #assert($patch_line =~ m/^---/) if DEBUG;
2921                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2922                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2923                         $patch_line = '--- a/' .
2924                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2925                                               esc_path($from{'file'}));
2926                 }
2927                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2928
2929                 $patch_line = <$fd>;
2930                 chomp $patch_line;
2931
2932                 #assert($patch_line =~ m/^+++/) if DEBUG;
2933                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2934                         $patch_line = '+++ b/' .
2935                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2936                                               esc_path($to{'file'}));
2937                 }
2938                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2939
2940                 # the patch itself
2941         LINE:
2942                 while ($patch_line = <$fd>) {
2943                         chomp $patch_line;
2944
2945                         next PATCH if ($patch_line =~ m/^diff /);
2946
2947                         print format_diff_line($patch_line, \%from, \%to);
2948                 }
2949
2950         } continue {
2951                 print "</div>\n"; # class="patch"
2952         }
2953
2954         if ($patch_number == 0) {
2955                 if (@hash_parents > 1) {
2956                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
2957                 } else {
2958                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
2959                 }
2960         }
2961
2962         print "</div>\n"; # class="patchset"
2963 }
2964
2965 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2966
2967 sub git_project_list_body {
2968         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2969
2970         my ($check_forks) = gitweb_check_feature('forks');
2971
2972         my @projects;
2973         foreach my $pr (@$projlist) {
2974                 my (@aa) = git_get_last_activity($pr->{'path'});
2975                 unless (@aa) {
2976                         next;
2977                 }
2978                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2979                 if (!defined $pr->{'descr'}) {
2980                         my $descr = git_get_project_description($pr->{'path'}) || "";
2981                         $pr->{'descr_long'} = to_utf8($descr);
2982                         $pr->{'descr'} = chop_str($descr, 25, 5);
2983                 }
2984                 if (!defined $pr->{'owner'}) {
2985                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2986                 }
2987                 if ($check_forks) {
2988                         my $pname = $pr->{'path'};
2989                         if (($pname =~ s/\.git$//) &&
2990                             ($pname !~ /\/$/) &&
2991                             (-d "$projectroot/$pname")) {
2992                                 $pr->{'forks'} = "-d $projectroot/$pname";
2993                         }
2994                         else {
2995                                 $pr->{'forks'} = 0;
2996                         }
2997                 }
2998                 push @projects, $pr;
2999         }
3000
3001         $order ||= $default_projects_order;
3002         $from = 0 unless defined $from;
3003         $to = $#projects if (!defined $to || $#projects < $to);
3004
3005         print "<table class=\"project_list\">\n";
3006         unless ($no_header) {
3007                 print "<tr>\n";
3008                 if ($check_forks) {
3009                         print "<th></th>\n";
3010                 }
3011                 if ($order eq "project") {
3012                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3013                         print "<th>Project</th>\n";
3014                 } else {
3015                         print "<th>" .
3016                               $cgi->a({-href => href(project=>undef, order=>'project'),
3017                                        -class => "header"}, "Project") .
3018                               "</th>\n";
3019                 }
3020                 if ($order eq "descr") {
3021                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3022                         print "<th>Description</th>\n";
3023                 } else {
3024                         print "<th>" .
3025                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3026                                        -class => "header"}, "Description") .
3027                               "</th>\n";
3028                 }
3029                 if ($order eq "owner") {
3030                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3031                         print "<th>Owner</th>\n";
3032                 } else {
3033                         print "<th>" .
3034                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3035                                        -class => "header"}, "Owner") .
3036                               "</th>\n";
3037                 }
3038                 if ($order eq "age") {
3039                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3040                         print "<th>Last Change</th>\n";
3041                 } else {
3042                         print "<th>" .
3043                               $cgi->a({-href => href(project=>undef, order=>'age'),
3044                                        -class => "header"}, "Last Change") .
3045                               "</th>\n";
3046                 }
3047                 print "<th></th>\n" .
3048                       "</tr>\n";
3049         }
3050         my $alternate = 1;
3051         for (my $i = $from; $i <= $to; $i++) {
3052                 my $pr = $projects[$i];
3053                 if ($alternate) {
3054                         print "<tr class=\"dark\">\n";
3055                 } else {
3056                         print "<tr class=\"light\">\n";
3057                 }
3058                 $alternate ^= 1;
3059                 if ($check_forks) {
3060                         print "<td>";
3061                         if ($pr->{'forks'}) {
3062                                 print "<!-- $pr->{'forks'} -->\n";
3063                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3064                         }
3065                         print "</td>\n";
3066                 }
3067                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3068                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3069                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3070                                         -class => "list", -title => $pr->{'descr_long'}},
3071                                         esc_html($pr->{'descr'})) . "</td>\n" .
3072                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3073                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3074                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3075                       "<td class=\"link\">" .
3076                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3077                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3078                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3079                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3080                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3081                       "</td>\n" .
3082                       "</tr>\n";
3083         }
3084         if (defined $extra) {
3085                 print "<tr>\n";
3086                 if ($check_forks) {
3087                         print "<td></td>\n";
3088                 }
3089                 print "<td colspan=\"5\">$extra</td>\n" .
3090                       "</tr>\n";
3091         }
3092         print "</table>\n";
3093 }
3094
3095 sub git_shortlog_body {
3096         # uses global variable $project
3097         my ($commitlist, $from, $to, $refs, $extra) = @_;
3098
3099         my $have_snapshot = gitweb_have_snapshot();
3100
3101         $from = 0 unless defined $from;
3102         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3103
3104         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3105         my $alternate = 1;
3106         for (my $i = $from; $i <= $to; $i++) {
3107                 my %co = %{$commitlist->[$i]};
3108                 my $commit = $co{'id'};
3109                 my $ref = format_ref_marker($refs, $commit);
3110                 if ($alternate) {
3111                         print "<tr class=\"dark\">\n";
3112                 } else {
3113                         print "<tr class=\"light\">\n";
3114                 }
3115                 $alternate ^= 1;
3116                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3117                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3118                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3119                       "<td>";
3120                 print format_subject_html($co{'title'}, $co{'title_short'},
3121                                           href(action=>"commit", hash=>$commit), $ref);
3122                 print "</td>\n" .
3123                       "<td class=\"link\">" .
3124                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3125                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3126                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3127                 if ($have_snapshot) {
3128                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3129                 }
3130                 print "</td>\n" .
3131                       "</tr>\n";
3132         }
3133         if (defined $extra) {
3134                 print "<tr>\n" .
3135                       "<td colspan=\"4\">$extra</td>\n" .
3136                       "</tr>\n";
3137         }
3138         print "</table>\n";
3139 }
3140
3141 sub git_history_body {
3142         # Warning: assumes constant type (blob or tree) during history
3143         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3144
3145         $from = 0 unless defined $from;
3146         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3147
3148         print "<table class=\"history\" cellspacing=\"0\">\n";
3149         my $alternate = 1;
3150         for (my $i = $from; $i <= $to; $i++) {
3151                 my %co = %{$commitlist->[$i]};
3152                 if (!%co) {
3153                         next;
3154                 }
3155                 my $commit = $co{'id'};
3156
3157                 my $ref = format_ref_marker($refs, $commit);
3158
3159                 if ($alternate) {
3160                         print "<tr class=\"dark\">\n";
3161                 } else {
3162                         print "<tr class=\"light\">\n";
3163                 }
3164                 $alternate ^= 1;
3165                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3166                       # shortlog uses      chop_str($co{'author_name'}, 10)
3167                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3168                       "<td>";
3169                 # originally git_history used chop_str($co{'title'}, 50)
3170                 print format_subject_html($co{'title'}, $co{'title_short'},
3171                                           href(action=>"commit", hash=>$commit), $ref);
3172                 print "</td>\n" .
3173                       "<td class=\"link\">" .
3174                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3175                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3176
3177                 if ($ftype eq 'blob') {
3178                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3179                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3180                         if (defined $blob_current && defined $blob_parent &&
3181                                         $blob_current ne $blob_parent) {
3182                                 print " | " .
3183                                         $cgi->a({-href => href(action=>"blobdiff",
3184                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3185                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3186                                                                file_name=>$file_name)},
3187                                                 "diff to current");
3188                         }
3189                 }
3190                 print "</td>\n" .
3191                       "</tr>\n";
3192         }
3193         if (defined $extra) {
3194                 print "<tr>\n" .
3195                       "<td colspan=\"4\">$extra</td>\n" .
3196                       "</tr>\n";
3197         }
3198         print "</table>\n";
3199 }
3200
3201 sub git_tags_body {
3202         # uses global variable $project
3203         my ($taglist, $from, $to, $extra) = @_;
3204         $from = 0 unless defined $from;
3205         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3206
3207         print "<table class=\"tags\" cellspacing=\"0\">\n";
3208         my $alternate = 1;
3209         for (my $i = $from; $i <= $to; $i++) {
3210                 my $entry = $taglist->[$i];
3211                 my %tag = %$entry;
3212                 my $comment = $tag{'subject'};
3213                 my $comment_short;
3214                 if (defined $comment) {
3215                         $comment_short = chop_str($comment, 30, 5);
3216                 }
3217                 if ($alternate) {
3218                         print "<tr class=\"dark\">\n";
3219                 } else {
3220                         print "<tr class=\"light\">\n";
3221                 }
3222                 $alternate ^= 1;
3223                 if (defined $tag{'age'}) {
3224                         print "<td><i>$tag{'age'}</i></td>\n";
3225                 } else {
3226                         print "<td></td>\n";
3227                 }
3228                 print "<td>" .
3229                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3230                                -class => "list name"}, esc_html($tag{'name'})) .
3231                       "</td>\n" .
3232                       "<td>";
3233                 if (defined $comment) {
3234                         print format_subject_html($comment, $comment_short,
3235                                                   href(action=>"tag", hash=>$tag{'id'}));
3236                 }
3237                 print "</td>\n" .
3238                       "<td class=\"selflink\">";
3239                 if ($tag{'type'} eq "tag") {
3240                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3241                 } else {
3242                         print "&nbsp;";
3243                 }
3244                 print "</td>\n" .
3245                       "<td class=\"link\">" . " | " .
3246                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3247                 if ($tag{'reftype'} eq "commit") {
3248                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3249                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3250                 } elsif ($tag{'reftype'} eq "blob") {
3251                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3252                 }
3253                 print "</td>\n" .
3254                       "</tr>";
3255         }
3256         if (defined $extra) {
3257                 print "<tr>\n" .
3258                       "<td colspan=\"5\">$extra</td>\n" .
3259                       "</tr>\n";
3260         }
3261         print "</table>\n";
3262 }
3263
3264 sub git_heads_body {
3265         # uses global variable $project
3266         my ($headlist, $head, $from, $to, $extra) = @_;
3267         $from = 0 unless defined $from;
3268         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3269
3270         print "<table class=\"heads\" cellspacing=\"0\">\n";
3271         my $alternate = 1;
3272         for (my $i = $from; $i <= $to; $i++) {
3273                 my $entry = $headlist->[$i];
3274                 my %ref = %$entry;
3275                 my $curr = $ref{'id'} eq $head;
3276                 if ($alternate) {
3277                         print "<tr class=\"dark\">\n";
3278                 } else {
3279                         print "<tr class=\"light\">\n";
3280                 }
3281                 $alternate ^= 1;
3282                 print "<td><i>$ref{'age'}</i></td>\n" .
3283                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3284                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3285                                -class => "list name"},esc_html($ref{'name'})) .
3286                       "</td>\n" .
3287                       "<td class=\"link\">" .
3288                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3289                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3290                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3291                       "</td>\n" .
3292                       "</tr>";
3293         }
3294         if (defined $extra) {
3295                 print "<tr>\n" .
3296                       "<td colspan=\"3\">$extra</td>\n" .
3297                       "</tr>\n";
3298         }
3299         print "</table>\n";
3300 }
3301
3302 sub git_search_grep_body {
3303         my ($commitlist, $from, $to, $extra) = @_;
3304         $from = 0 unless defined $from;
3305         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3306
3307         print "<table class=\"grep\" cellspacing=\"0\">\n";
3308         my $alternate = 1;
3309         for (my $i = $from; $i <= $to; $i++) {
3310                 my %co = %{$commitlist->[$i]};
3311                 if (!%co) {
3312                         next;
3313                 }
3314                 my $commit = $co{'id'};
3315                 if ($alternate) {
3316                         print "<tr class=\"dark\">\n";
3317                 } else {
3318                         print "<tr class=\"light\">\n";
3319                 }
3320                 $alternate ^= 1;
3321                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3322                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3323                       "<td>" .
3324                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3325                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3326                 my $comment = $co{'comment'};
3327                 foreach my $line (@$comment) {
3328                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3329                                 my $lead = esc_html($1) || "";
3330                                 $lead = chop_str($lead, 30, 10);
3331                                 my $match = esc_html($2) || "";
3332                                 my $trail = esc_html($3) || "";
3333                                 $trail = chop_str($trail, 30, 10);
3334                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3335                                 print chop_str($text, 80, 5) . "<br/>\n";
3336                         }
3337                 }
3338                 print "</td>\n" .
3339                       "<td class=\"link\">" .
3340                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3341                       " | " .
3342                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3343                 print "</td>\n" .
3344                       "</tr>\n";
3345         }
3346         if (defined $extra) {
3347                 print "<tr>\n" .
3348                       "<td colspan=\"3\">$extra</td>\n" .
3349                       "</tr>\n";
3350         }
3351         print "</table>\n";
3352 }
3353
3354 ## ======================================================================
3355 ## ======================================================================
3356 ## actions
3357
3358 sub git_project_list {
3359         my $order = $cgi->param('o');
3360         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3361                 die_error(undef, "Unknown order parameter");
3362         }
3363
3364         my @list = git_get_projects_list();
3365         if (!@list) {
3366                 die_error(undef, "No projects found");
3367         }
3368
3369         git_header_html();
3370         if (-f $home_text) {
3371                 print "<div class=\"index_include\">\n";
3372                 open (my $fd, $home_text);
3373                 print <$fd>;
3374                 close $fd;
3375                 print "</div>\n";
3376         }
3377         git_project_list_body(\@list, $order);
3378         git_footer_html();
3379 }
3380
3381 sub git_forks {
3382         my $order = $cgi->param('o');
3383         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3384                 die_error(undef, "Unknown order parameter");
3385         }
3386
3387         my @list = git_get_projects_list($project);
3388         if (!@list) {
3389                 die_error(undef, "No forks found");
3390         }
3391
3392         git_header_html();
3393         git_print_page_nav('','');
3394         git_print_header_div('summary', "$project forks");
3395         git_project_list_body(\@list, $order);
3396         git_footer_html();
3397 }
3398
3399 sub git_project_index {
3400         my @projects = git_get_projects_list($project);
3401
3402         print $cgi->header(
3403                 -type => 'text/plain',
3404                 -charset => 'utf-8',
3405                 -content_disposition => 'inline; filename="index.aux"');
3406
3407         foreach my $pr (@projects) {
3408                 if (!exists $pr->{'owner'}) {
3409                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3410                 }
3411
3412                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3413                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3414                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3415                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3416                 $path  =~ s/ /\+/g;
3417                 $owner =~ s/ /\+/g;
3418
3419                 print "$path $owner\n";
3420         }
3421 }
3422
3423 sub git_summary {
3424         my $descr = git_get_project_description($project) || "none";
3425         my %co = parse_commit("HEAD");
3426         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3427         my $head = $co{'id'};
3428
3429         my $owner = git_get_project_owner($project);
3430
3431         my $refs = git_get_references();
3432         # These get_*_list functions return one more to allow us to see if
3433         # there are more ...
3434         my @taglist  = git_get_tags_list(16);
3435         my @headlist = git_get_heads_list(16);
3436         my @forklist;
3437         my ($check_forks) = gitweb_check_feature('forks');
3438
3439         if ($check_forks) {
3440                 @forklist = git_get_projects_list($project);
3441         }
3442
3443         git_header_html();
3444         git_print_page_nav('summary','', $head);
3445
3446         print "<div class=\"title\">&nbsp;</div>\n";
3447         print "<table cellspacing=\"0\">\n" .
3448               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3449               "<tr><td>owner</td><td>$owner</td></tr>\n";
3450         if (defined $cd{'rfc2822'}) {
3451                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3452         }
3453
3454         # use per project git URL list in $projectroot/$project/cloneurl
3455         # or make project git URL from git base URL and project name
3456         my $url_tag = "URL";
3457         my @url_list = git_get_project_url_list($project);
3458         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3459         foreach my $git_url (@url_list) {
3460                 next unless $git_url;
3461                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3462                 $url_tag = "";
3463         }
3464         print "</table>\n";
3465
3466         if (-s "$projectroot/$project/README.html") {
3467                 if (open my $fd, "$projectroot/$project/README.html") {
3468                         print "<div class=\"title\">readme</div>\n";
3469                         print $_ while (<$fd>);
3470                         close $fd;
3471                 }
3472         }
3473
3474         # we need to request one more than 16 (0..15) to check if
3475         # those 16 are all
3476         my @commitlist = $head ? parse_commits($head, 17) : ();
3477         if (@commitlist) {
3478                 git_print_header_div('shortlog');
3479                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3480                                   $#commitlist <=  15 ? undef :
3481                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3482         }
3483
3484         if (@taglist) {
3485                 git_print_header_div('tags');
3486                 git_tags_body(\@taglist, 0, 15,
3487                               $#taglist <=  15 ? undef :
3488                               $cgi->a({-href => href(action=>"tags")}, "..."));
3489         }
3490
3491         if (@headlist) {
3492                 git_print_header_div('heads');
3493                 git_heads_body(\@headlist, $head, 0, 15,
3494                                $#headlist <= 15 ? undef :
3495                                $cgi->a({-href => href(action=>"heads")}, "..."));
3496         }
3497
3498         if (@forklist) {
3499                 git_print_header_div('forks');
3500                 git_project_list_body(\@forklist, undef, 0, 15,
3501                                       $#forklist <= 15 ? undef :
3502                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3503                                       'noheader');
3504         }
3505
3506         git_footer_html();
3507 }
3508
3509 sub git_tag {
3510         my $head = git_get_head_hash($project);
3511         git_header_html();
3512         git_print_page_nav('','', $head,undef,$head);
3513         my %tag = parse_tag($hash);
3514
3515         if (! %tag) {
3516                 die_error(undef, "Unknown tag object");
3517         }
3518
3519         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3520         print "<div class=\"title_text\">\n" .
3521               "<table cellspacing=\"0\">\n" .
3522               "<tr>\n" .
3523               "<td>object</td>\n" .
3524               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3525                                $tag{'object'}) . "</td>\n" .
3526               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3527                                               $tag{'type'}) . "</td>\n" .
3528               "</tr>\n";
3529         if (defined($tag{'author'})) {
3530                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3531                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3532                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3533                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3534                         "</td></tr>\n";
3535         }
3536         print "</table>\n\n" .
3537               "</div>\n";
3538         print "<div class=\"page_body\">";
3539         my $comment = $tag{'comment'};
3540         foreach my $line (@$comment) {
3541                 chomp $line;
3542                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3543         }
3544         print "</div>\n";
3545         git_footer_html();
3546 }
3547
3548 sub git_blame2 {
3549         my $fd;
3550         my $ftype;
3551
3552         my ($have_blame) = gitweb_check_feature('blame');
3553         if (!$have_blame) {
3554                 die_error('403 Permission denied', "Permission denied");
3555         }
3556         die_error('404 Not Found', "File name not defined") if (!$file_name);
3557         $hash_base ||= git_get_head_hash($project);
3558         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3559         my %co = parse_commit($hash_base)
3560                 or die_error(undef, "Reading commit failed");
3561         if (!defined $hash) {
3562                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3563                         or die_error(undef, "Error looking up file");
3564         }
3565         $ftype = git_get_type($hash);
3566         if ($ftype !~ "blob") {
3567                 die_error('400 Bad Request', "Object is not a blob");
3568         }
3569         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3570               $file_name, $hash_base)
3571                 or die_error(undef, "Open git-blame failed");
3572         git_header_html();
3573         my $formats_nav =
3574                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3575                         "blob") .
3576                 " | " .
3577                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3578                         "history") .
3579                 " | " .
3580                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3581                         "HEAD");
3582         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3583         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3584         git_print_page_path($file_name, $ftype, $hash_base);
3585         my @rev_color = (qw(light2 dark2));
3586         my $num_colors = scalar(@rev_color);
3587         my $current_color = 0;
3588         my $last_rev;
3589         print <<HTML;
3590 <div class="page_body">
3591 <table class="blame">
3592 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3593 HTML
3594         my %metainfo = ();
3595         while (1) {
3596                 $_ = <$fd>;
3597                 last unless defined $_;
3598                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3599                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3600                 if (!exists $metainfo{$full_rev}) {
3601                         $metainfo{$full_rev} = {};
3602                 }
3603                 my $meta = $metainfo{$full_rev};
3604                 while (<$fd>) {
3605                         last if (s/^\t//);
3606                         if (/^(\S+) (.*)$/) {
3607                                 $meta->{$1} = $2;
3608                         }
3609                 }
3610                 my $data = $_;
3611                 chomp $data;
3612                 my $rev = substr($full_rev, 0, 8);
3613                 my $author = $meta->{'author'};
3614                 my %date = parse_date($meta->{'author-time'},
3615                                       $meta->{'author-tz'});
3616                 my $date = $date{'iso-tz'};
3617                 if ($group_size) {
3618                         $current_color = ++$current_color % $num_colors;
3619                 }
3620                 print "<tr class=\"$rev_color[$current_color]\">\n";
3621                 if ($group_size) {
3622                         print "<td class=\"sha1\"";
3623                         print " title=\"". esc_html($author) . ", $date\"";
3624                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3625                         print ">";
3626                         print $cgi->a({-href => href(action=>"commit",
3627                                                      hash=>$full_rev,
3628                                                      file_name=>$file_name)},
3629                                       esc_html($rev));
3630                         print "</td>\n";
3631                 }
3632                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3633                         or die_error(undef, "Open git-rev-parse failed");
3634                 my $parent_commit = <$dd>;
3635                 close $dd;
3636                 chomp($parent_commit);
3637                 my $blamed = href(action => 'blame',
3638                                   file_name => $meta->{'filename'},
3639                                   hash_base => $parent_commit);
3640                 print "<td class=\"linenr\">";
3641                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3642                                 -id => "l$lineno",
3643                                 -class => "linenr" },
3644                               esc_html($lineno));
3645                 print "</td>";
3646                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3647                 print "</tr>\n";
3648         }
3649         print "</table>\n";
3650         print "</div>";
3651         close $fd
3652                 or print "Reading blob failed\n";
3653         git_footer_html();
3654 }
3655
3656 sub git_blame {
3657         my $fd;
3658
3659         my ($have_blame) = gitweb_check_feature('blame');
3660         if (!$have_blame) {
3661                 die_error('403 Permission denied', "Permission denied");
3662         }
3663         die_error('404 Not Found', "File name not defined") if (!$file_name);
3664         $hash_base ||= git_get_head_hash($project);
3665         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3666         my %co = parse_commit($hash_base)
3667                 or die_error(undef, "Reading commit failed");
3668         if (!defined $hash) {
3669                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3670                         or die_error(undef, "Error lookup file");
3671         }
3672         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3673                 or die_error(undef, "Open git-annotate failed");
3674         git_header_html();
3675         my $formats_nav =
3676                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3677                         "blob") .
3678                 " | " .
3679                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3680                         "history") .
3681                 " | " .
3682                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3683                         "HEAD");
3684         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3685         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3686         git_print_page_path($file_name, 'blob', $hash_base);
3687         print "<div class=\"page_body\">\n";
3688         print <<HTML;
3689 <table class="blame">
3690   <tr>
3691     <th>Commit</th>
3692     <th>Age</th>
3693     <th>Author</th>
3694     <th>Line</th>
3695     <th>Data</th>
3696   </tr>
3697 HTML
3698         my @line_class = (qw(light dark));
3699         my $line_class_len = scalar (@line_class);
3700         my $line_class_num = $#line_class;
3701         while (my $line = <$fd>) {
3702                 my $long_rev;
3703                 my $short_rev;
3704                 my $author;
3705                 my $time;
3706                 my $lineno;
3707                 my $data;
3708                 my $age;
3709                 my $age_str;
3710                 my $age_class;
3711
3712                 chomp $line;
3713                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3714
3715                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3716                         $long_rev = $1;
3717                         $author   = $2;
3718                         $time     = $3;
3719                         $lineno   = $4;
3720                         $data     = $5;
3721                 } else {
3722                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3723                         next;
3724                 }
3725                 $short_rev  = substr ($long_rev, 0, 8);
3726                 $age        = time () - $time;
3727                 $age_str    = age_string ($age);
3728                 $age_str    =~ s/ /&nbsp;/g;
3729                 $age_class  = age_class($age);
3730                 $author     = esc_html ($author);
3731                 $author     =~ s/ /&nbsp;/g;
3732
3733                 $data = untabify($data);
3734                 $data = esc_html ($data);
3735
3736                 print <<HTML;
3737   <tr class="$line_class[$line_class_num]">
3738     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3739     <td class="$age_class">$age_str</td>
3740     <td>$author</td>
3741     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3742     <td class="pre">$data</td>
3743   </tr>
3744 HTML
3745         } # while (my $line = <$fd>)
3746         print "</table>\n\n";
3747         close $fd
3748                 or print "Reading blob failed.\n";
3749         print "</div>";
3750         git_footer_html();
3751 }
3752
3753 sub git_tags {
3754         my $head = git_get_head_hash($project);
3755         git_header_html();
3756         git_print_page_nav('','', $head,undef,$head);
3757         git_print_header_div('summary', $project);
3758
3759         my @tagslist = git_get_tags_list();
3760         if (@tagslist) {
3761                 git_tags_body(\@tagslist);
3762         }
3763         git_footer_html();
3764 }
3765
3766 sub git_heads {
3767         my $head = git_get_head_hash($project);
3768         git_header_html();
3769         git_print_page_nav('','', $head,undef,$head);
3770         git_print_header_div('summary', $project);
3771
3772         my @headslist = git_get_heads_list();
3773         if (@headslist) {
3774                 git_heads_body(\@headslist, $head);
3775         }
3776         git_footer_html();
3777 }
3778
3779 sub git_blob_plain {
3780         my $expires;
3781
3782         if (!defined $hash) {
3783                 if (defined $file_name) {
3784                         my $base = $hash_base || git_get_head_hash($project);
3785                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3786                                 or die_error(undef, "Error lookup file");
3787                 } else {
3788                         die_error(undef, "No file name defined");
3789                 }
3790         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3791                 # blobs defined by non-textual hash id's can be cached
3792                 $expires = "+1d";
3793         }
3794
3795         my $type = shift;
3796         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3797                 or die_error(undef, "Couldn't cat $file_name, $hash");
3798
3799         $type ||= blob_mimetype($fd, $file_name);
3800
3801         # save as filename, even when no $file_name is given
3802         my $save_as = "$hash";
3803         if (defined $file_name) {
3804                 $save_as = $file_name;
3805         } elsif ($type =~ m/^text\//) {
3806                 $save_as .= '.txt';
3807         }
3808
3809         print $cgi->header(
3810                 -type => "$type",
3811                 -expires=>$expires,
3812                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3813         undef $/;
3814         binmode STDOUT, ':raw';
3815         print <$fd>;
3816         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3817         $/ = "\n";
3818         close $fd;
3819 }
3820
3821 sub git_blob {
3822         my $expires;
3823
3824         if (!defined $hash) {
3825                 if (defined $file_name) {
3826                         my $base = $hash_base || git_get_head_hash($project);
3827                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3828                                 or die_error(undef, "Error lookup file");
3829                 } else {
3830                         die_error(undef, "No file name defined");
3831                 }
3832         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3833                 # blobs defined by non-textual hash id's can be cached
3834                 $expires = "+1d";
3835         }
3836
3837         my ($have_blame) = gitweb_check_feature('blame');
3838         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3839                 or die_error(undef, "Couldn't cat $file_name, $hash");
3840         my $mimetype = blob_mimetype($fd, $file_name);
3841         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3842                 close $fd;
3843                 return git_blob_plain($mimetype);
3844         }
3845         # we can have blame only for text/* mimetype
3846         $have_blame &&= ($mimetype =~ m!^text/!);
3847
3848         git_header_html(undef, $expires);
3849         my $formats_nav = '';
3850         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3851                 if (defined $file_name) {
3852                         if ($have_blame) {
3853                                 $formats_nav .=
3854                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3855                                                                hash=>$hash, file_name=>$file_name)},
3856                                                 "blame") .
3857                                         " | ";
3858                         }
3859                         $formats_nav .=
3860                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3861                                                        hash=>$hash, file_name=>$file_name)},
3862                                         "history") .
3863                                 " | " .
3864                                 $cgi->a({-href => href(action=>"blob_plain",
3865                                                        hash=>$hash, file_name=>$file_name)},
3866                                         "raw") .
3867                                 " | " .
3868                                 $cgi->a({-href => href(action=>"blob",
3869                                                        hash_base=>"HEAD", file_name=>$file_name)},
3870                                         "HEAD");
3871                 } else {
3872                         $formats_nav .=
3873                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3874                 }
3875                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3876                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3877         } else {
3878                 print "<div class=\"page_nav\">\n" .
3879                       "<br/><br/></div>\n" .
3880                       "<div class=\"title\">$hash</div>\n";
3881         }
3882         git_print_page_path($file_name, "blob", $hash_base);
3883         print "<div class=\"page_body\">\n";
3884         if ($mimetype =~ m!^text/!) {
3885                 my $nr;
3886                 while (my $line = <$fd>) {
3887                         chomp $line;
3888                         $nr++;
3889                         $line = untabify($line);
3890                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3891                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3892                 }
3893         } elsif ($mimetype =~ m!^image/!) {
3894                 print qq!<img type="$mimetype"!;
3895                 if ($file_name) {
3896                         print qq! alt="$file_name" title="$file_name"!;
3897                 }
3898                 print qq! src="! .
3899                       href(action=>"blob_plain", hash=>$hash,
3900                            hash_base=>$hash_base, file_name=>$file_name) .
3901                       qq!" />\n!;
3902         }
3903         close $fd
3904                 or print "Reading blob failed.\n";
3905         print "</div>";
3906         git_footer_html();
3907 }
3908
3909 sub git_tree {
3910         my $have_snapshot = gitweb_have_snapshot();
3911
3912         if (!defined $hash_base) {
3913                 $hash_base = "HEAD";
3914         }
3915         if (!defined $hash) {
3916                 if (defined $file_name) {
3917                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3918                 } else {
3919                         $hash = $hash_base;
3920                 }
3921         }
3922         $/ = "\0";
3923         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3924                 or die_error(undef, "Open git-ls-tree failed");
3925         my @entries = map { chomp; $_ } <$fd>;
3926         close $fd or die_error(undef, "Reading tree failed");
3927         $/ = "\n";
3928
3929         my $refs = git_get_references();
3930         my $ref = format_ref_marker($refs, $hash_base);
3931         git_header_html();
3932         my $basedir = '';
3933         my ($have_blame) = gitweb_check_feature('blame');
3934         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3935                 my @views_nav = ();
3936                 if (defined $file_name) {
3937                         push @views_nav,
3938                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3939                                                        hash=>$hash, file_name=>$file_name)},
3940                                         "history"),
3941                                 $cgi->a({-href => href(action=>"tree",
3942                                                        hash_base=>"HEAD", file_name=>$file_name)},
3943                                         "HEAD"),
3944                 }
3945                 if ($have_snapshot) {
3946                         # FIXME: Should be available when we have no hash base as well.
3947                         push @views_nav,
3948                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3949                                         "snapshot");
3950                 }
3951                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3952                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3953         } else {
3954                 undef $hash_base;
3955                 print "<div class=\"page_nav\">\n";
3956                 print "<br/><br/></div>\n";
3957                 print "<div class=\"title\">$hash</div>\n";
3958         }
3959         if (defined $file_name) {
3960                 $basedir = $file_name;
3961                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3962                         $basedir .= '/';
3963                 }
3964         }
3965         git_print_page_path($file_name, 'tree', $hash_base);
3966         print "<div class=\"page_body\">\n";
3967         print "<table cellspacing=\"0\">\n";
3968         my $alternate = 1;
3969         # '..' (top directory) link if possible
3970         if (defined $hash_base &&
3971             defined $file_name && $file_name =~ m![^/]+$!) {
3972                 if ($alternate) {
3973                         print "<tr class=\"dark\">\n";
3974                 } else {
3975                         print "<tr class=\"light\">\n";
3976                 }
3977                 $alternate ^= 1;
3978
3979                 my $up = $file_name;
3980                 $up =~ s!/?[^/]+$!!;
3981                 undef $up unless $up;
3982                 # based on git_print_tree_entry
3983                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3984                 print '<td class="list">';
3985                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3986                                              file_name=>$up)},
3987                               "..");
3988                 print "</td>\n";
3989                 print "<td class=\"link\"></td>\n";
3990
3991                 print "</tr>\n";
3992         }
3993         foreach my $line (@entries) {
3994                 my %t = parse_ls_tree_line($line, -z => 1);
3995
3996                 if ($alternate) {
3997                         print "<tr class=\"dark\">\n";
3998                 } else {
3999                         print "<tr class=\"light\">\n";
4000                 }
4001                 $alternate ^= 1;
4002
4003                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4004
4005                 print "</tr>\n";
4006         }
4007         print "</table>\n" .
4008               "</div>";
4009         git_footer_html();
4010 }
4011
4012 sub git_snapshot {
4013         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4014         my $have_snapshot = (defined $ctype && defined $suffix);
4015         if (!$have_snapshot) {
4016                 die_error('403 Permission denied', "Permission denied");
4017         }
4018
4019         if (!defined $hash) {
4020                 $hash = git_get_head_hash($project);
4021         }
4022
4023         my $git = git_cmd_str();
4024         my $name = $project;
4025         $name =~ s/\047/\047\\\047\047/g;
4026         my $filename = to_utf8(basename($project));
4027         my $cmd;
4028         if ($suffix eq 'zip') {
4029                 $filename .= "-$hash.$suffix";
4030                 $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4031         } else {
4032                 $filename .= "-$hash.tar.$suffix";
4033                 $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4034         }
4035
4036         print $cgi->header(
4037                 -type => "application/$ctype",
4038                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4039                 -status => '200 OK');
4040
4041         open my $fd, "-|", $cmd
4042                 or die_error(undef, "Execute git-archive failed");
4043         binmode STDOUT, ':raw';
4044         print <$fd>;
4045         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4046         close $fd;
4047
4048 }
4049
4050 sub git_log {
4051         my $head = git_get_head_hash($project);
4052         if (!defined $hash) {
4053                 $hash = $head;
4054         }
4055         if (!defined $page) {
4056                 $page = 0;
4057         }
4058         my $refs = git_get_references();
4059
4060         my @commitlist = parse_commits($hash, 101, (100 * $page));
4061
4062         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4063
4064         git_header_html();
4065         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4066
4067         if (!@commitlist) {
4068                 my %co = parse_commit($hash);
4069
4070                 git_print_header_div('summary', $project);
4071                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4072         }
4073         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4074         for (my $i = 0; $i <= $to; $i++) {
4075                 my %co = %{$commitlist[$i]};
4076                 next if !%co;
4077                 my $commit = $co{'id'};
4078                 my $ref = format_ref_marker($refs, $commit);
4079                 my %ad = parse_date($co{'author_epoch'});
4080                 git_print_header_div('commit',
4081                                "<span class=\"age\">$co{'age_string'}</span>" .
4082                                esc_html($co{'title'}) . $ref,
4083                                $commit);
4084                 print "<div class=\"title_text\">\n" .
4085                       "<div class=\"log_link\">\n" .
4086                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4087                       " | " .
4088                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4089                       " | " .
4090                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4091                       "<br/>\n" .
4092                       "</div>\n" .
4093                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4094                       "</div>\n";
4095
4096                 print "<div class=\"log_body\">\n";
4097                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4098                 print "</div>\n";
4099         }
4100         if ($#commitlist >= 100) {
4101                 print "<div class=\"page_nav\">\n";
4102                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4103                                -accesskey => "n", -title => "Alt-n"}, "next");
4104                 print "</div>\n";
4105         }
4106         git_footer_html();
4107 }
4108
4109 sub git_commit {
4110         $hash ||= $hash_base || "HEAD";
4111         my %co = parse_commit($hash);
4112         if (!%co) {
4113                 die_error(undef, "Unknown commit object");
4114         }
4115         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4116         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4117
4118         my $parent  = $co{'parent'};
4119         my $parents = $co{'parents'}; # listref
4120
4121         # we need to prepare $formats_nav before any parameter munging
4122         my $formats_nav;
4123         if (!defined $parent) {
4124                 # --root commitdiff
4125                 $formats_nav .= '(initial)';
4126         } elsif (@$parents == 1) {
4127                 # single parent commit
4128                 $formats_nav .=
4129                         '(parent: ' .
4130                         $cgi->a({-href => href(action=>"commit",
4131                                                hash=>$parent)},
4132                                 esc_html(substr($parent, 0, 7))) .
4133                         ')';
4134         } else {
4135                 # merge commit
4136                 $formats_nav .=
4137                         '(merge: ' .
4138                         join(' ', map {
4139                                 $cgi->a({-href => href(action=>"commit",
4140                                                        hash=>$_)},
4141                                         esc_html(substr($_, 0, 7)));
4142                         } @$parents ) .
4143                         ')';
4144         }
4145
4146         if (!defined $parent) {
4147                 $parent = "--root";
4148         }
4149         my @difftree;
4150         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4151                 @diff_opts,
4152                 (@$parents <= 1 ? $parent : '-c'),
4153                 $hash, "--"
4154                 or die_error(undef, "Open git-diff-tree failed");
4155         @difftree = map { chomp; $_ } <$fd>;
4156         close $fd or die_error(undef, "Reading git-diff-tree failed");
4157
4158         # non-textual hash id's can be cached
4159         my $expires;
4160         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4161                 $expires = "+1d";
4162         }
4163         my $refs = git_get_references();
4164         my $ref = format_ref_marker($refs, $co{'id'});
4165
4166         my $have_snapshot = gitweb_have_snapshot();
4167
4168         git_header_html(undef, $expires);
4169         git_print_page_nav('commit', '',
4170                            $hash, $co{'tree'}, $hash,
4171                            $formats_nav);
4172
4173         if (defined $co{'parent'}) {
4174                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4175         } else {
4176                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4177         }
4178         print "<div class=\"title_text\">\n" .
4179               "<table cellspacing=\"0\">\n";
4180         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4181               "<tr>" .
4182               "<td></td><td> $ad{'rfc2822'}";
4183         if ($ad{'hour_local'} < 6) {
4184                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4185                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4186         } else {
4187                 printf(" (%02d:%02d %s)",
4188                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4189         }
4190         print "</td>" .
4191               "</tr>\n";
4192         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4193         print "<tr><td></td><td> $cd{'rfc2822'}" .
4194               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4195               "</td></tr>\n";
4196         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4197         print "<tr>" .
4198               "<td>tree</td>" .
4199               "<td class=\"sha1\">" .
4200               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4201                        class => "list"}, $co{'tree'}) .
4202               "</td>" .
4203               "<td class=\"link\">" .
4204               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4205                       "tree");
4206         if ($have_snapshot) {
4207                 print " | " .
4208                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4209         }
4210         print "</td>" .
4211               "</tr>\n";
4212
4213         foreach my $par (@$parents) {
4214                 print "<tr>" .
4215                       "<td>parent</td>" .
4216                       "<td class=\"sha1\">" .
4217                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4218                                class => "list"}, $par) .
4219                       "</td>" .
4220                       "<td class=\"link\">" .
4221                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4222                       " | " .
4223                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4224                       "</td>" .
4225                       "</tr>\n";
4226         }
4227         print "</table>".
4228               "</div>\n";
4229
4230         print "<div class=\"page_body\">\n";
4231         git_print_log($co{'comment'});
4232         print "</div>\n";
4233
4234         git_difftree_body(\@difftree, $hash, @$parents);
4235
4236         git_footer_html();
4237 }
4238
4239 sub git_object {
4240         # object is defined by:
4241         # - hash or hash_base alone
4242         # - hash_base and file_name
4243         my $type;
4244
4245         # - hash or hash_base alone
4246         if ($hash || ($hash_base && !defined $file_name)) {
4247                 my $object_id = $hash || $hash_base;
4248
4249                 my $git_command = git_cmd_str();
4250                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4251                         or die_error('404 Not Found', "Object does not exist");
4252                 $type = <$fd>;
4253                 chomp $type;
4254                 close $fd
4255                         or die_error('404 Not Found', "Object does not exist");
4256
4257         # - hash_base and file_name
4258         } elsif ($hash_base && defined $file_name) {
4259                 $file_name =~ s,/+$,,;
4260
4261                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4262                         or die_error('404 Not Found', "Base object does not exist");
4263
4264                 # here errors should not hapen
4265                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4266                         or die_error(undef, "Open git-ls-tree failed");
4267                 my $line = <$fd>;
4268                 close $fd;
4269
4270                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4271                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4272                         die_error('404 Not Found', "File or directory for given base does not exist");
4273                 }
4274                 $type = $2;
4275                 $hash = $3;
4276         } else {
4277                 die_error('404 Not Found', "Not enough information to find object");
4278         }
4279
4280         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4281                                           hash=>$hash, hash_base=>$hash_base,
4282                                           file_name=>$file_name),
4283                              -status => '302 Found');
4284 }
4285
4286 sub git_blobdiff {
4287         my $format = shift || 'html';
4288
4289         my $fd;
4290         my @difftree;
4291         my %diffinfo;
4292         my $expires;
4293
4294         # preparing $fd and %diffinfo for git_patchset_body
4295         # new style URI
4296         if (defined $hash_base && defined $hash_parent_base) {
4297                 if (defined $file_name) {
4298                         # read raw output
4299                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4300                                 $hash_parent_base, $hash_base,
4301                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4302                                 or die_error(undef, "Open git-diff-tree failed");
4303                         @difftree = map { chomp; $_ } <$fd>;
4304                         close $fd
4305                                 or die_error(undef, "Reading git-diff-tree failed");
4306                         @difftree
4307                                 or die_error('404 Not Found', "Blob diff not found");
4308
4309                 } elsif (defined $hash &&
4310                          $hash =~ /[0-9a-fA-F]{40}/) {
4311                         # try to find filename from $hash
4312
4313                         # read filtered raw output
4314                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4315                                 $hash_parent_base, $hash_base, "--"
4316                                 or die_error(undef, "Open git-diff-tree failed");
4317                         @difftree =
4318                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4319                                 # $hash == to_id
4320                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4321                                 map { chomp; $_ } <$fd>;
4322                         close $fd
4323                                 or die_error(undef, "Reading git-diff-tree failed");
4324                         @difftree
4325                                 or die_error('404 Not Found', "Blob diff not found");
4326
4327                 } else {
4328                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4329                 }
4330
4331                 if (@difftree > 1) {
4332                         die_error('404 Not Found', "Ambiguous blob diff specification");
4333                 }
4334
4335                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4336                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4337                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4338
4339                 $hash_parent ||= $diffinfo{'from_id'};
4340                 $hash        ||= $diffinfo{'to_id'};
4341
4342                 # non-textual hash id's can be cached
4343                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4344                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4345                         $expires = '+1d';
4346                 }
4347
4348                 # open patch output
4349                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4350                         '-p', ($format eq 'html' ? "--full-index" : ()),
4351                         $hash_parent_base, $hash_base,
4352                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4353                         or die_error(undef, "Open git-diff-tree failed");
4354         }
4355
4356         # old/legacy style URI
4357         if (!%diffinfo && # if new style URI failed
4358             defined $hash && defined $hash_parent) {
4359                 # fake git-diff-tree raw output
4360                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4361                 $diffinfo{'from_id'} = $hash_parent;
4362                 $diffinfo{'to_id'}   = $hash;
4363                 if (defined $file_name) {
4364                         if (defined $file_parent) {
4365                                 $diffinfo{'status'} = '2';
4366                                 $diffinfo{'from_file'} = $file_parent;
4367                                 $diffinfo{'to_file'}   = $file_name;
4368                         } else { # assume not renamed
4369                                 $diffinfo{'status'} = '1';
4370                                 $diffinfo{'from_file'} = $file_name;
4371                                 $diffinfo{'to_file'}   = $file_name;
4372                         }
4373                 } else { # no filename given
4374                         $diffinfo{'status'} = '2';
4375                         $diffinfo{'from_file'} = $hash_parent;
4376                         $diffinfo{'to_file'}   = $hash;
4377                 }
4378
4379                 # non-textual hash id's can be cached
4380                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4381                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4382                         $expires = '+1d';
4383                 }
4384
4385                 # open patch output
4386                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4387                         '-p', ($format eq 'html' ? "--full-index" : ()),
4388                         $hash_parent, $hash, "--"
4389                         or die_error(undef, "Open git-diff failed");
4390         } else  {
4391                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4392                         unless %diffinfo;
4393         }
4394
4395         # header
4396         if ($format eq 'html') {
4397                 my $formats_nav =
4398                         $cgi->a({-href => href(action=>"blobdiff_plain",
4399                                                hash=>$hash, hash_parent=>$hash_parent,
4400                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4401                                                file_name=>$file_name, file_parent=>$file_parent)},
4402                                 "raw");
4403                 git_header_html(undef, $expires);
4404                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4405                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4406                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4407                 } else {
4408                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4409                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4410                 }
4411                 if (defined $file_name) {
4412                         git_print_page_path($file_name, "blob", $hash_base);
4413                 } else {
4414                         print "<div class=\"page_path\"></div>\n";
4415                 }
4416
4417         } elsif ($format eq 'plain') {
4418                 print $cgi->header(
4419                         -type => 'text/plain',
4420                         -charset => 'utf-8',
4421                         -expires => $expires,
4422                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4423
4424                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4425
4426         } else {
4427                 die_error(undef, "Unknown blobdiff format");
4428         }
4429
4430         # patch
4431         if ($format eq 'html') {
4432                 print "<div class=\"page_body\">\n";
4433
4434                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4435                 close $fd;
4436
4437                 print "</div>\n"; # class="page_body"
4438                 git_footer_html();
4439
4440         } else {
4441                 while (my $line = <$fd>) {
4442                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4443                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4444
4445                         print $line;
4446
4447                         last if $line =~ m!^\+\+\+!;
4448                 }
4449                 local $/ = undef;
4450                 print <$fd>;
4451                 close $fd;
4452         }
4453 }
4454
4455 sub git_blobdiff_plain {
4456         git_blobdiff('plain');
4457 }
4458
4459 sub git_commitdiff {
4460         my $format = shift || 'html';
4461         $hash ||= $hash_base || "HEAD";
4462         my %co = parse_commit($hash);
4463         if (!%co) {
4464                 die_error(undef, "Unknown commit object");
4465         }
4466
4467         # we need to prepare $formats_nav before any parameter munging
4468         my $formats_nav;
4469         if ($format eq 'html') {
4470                 $formats_nav =
4471                         $cgi->a({-href => href(action=>"commitdiff_plain",
4472                                                hash=>$hash, hash_parent=>$hash_parent)},
4473                                 "raw");
4474
4475                 if (defined $hash_parent) {
4476                         # commitdiff with two commits given
4477                         my $hash_parent_short = $hash_parent;
4478                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4479                                 $hash_parent_short = substr($hash_parent, 0, 7);
4480                         }
4481                         $formats_nav .=
4482                                 ' (from';
4483                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4484                                 if ($co{'parents'}[$i] eq $hash_parent) {
4485                                         $formats_nav .= ' parent ' . ($i+1);
4486                                         last;
4487                                 }
4488                         }
4489                         $formats_nav .= ': ' .
4490                                 $cgi->a({-href => href(action=>"commitdiff",
4491                                                        hash=>$hash_parent)},
4492                                         esc_html($hash_parent_short)) .
4493                                 ')';
4494                 } elsif (!$co{'parent'}) {
4495                         # --root commitdiff
4496                         $formats_nav .= ' (initial)';
4497                 } elsif (scalar @{$co{'parents'}} == 1) {
4498                         # single parent commit
4499                         $formats_nav .=
4500                                 ' (parent: ' .
4501                                 $cgi->a({-href => href(action=>"commitdiff",
4502                                                        hash=>$co{'parent'})},
4503                                         esc_html(substr($co{'parent'}, 0, 7))) .
4504                                 ')';
4505                 } else {
4506                         # merge commit
4507                         $formats_nav .=
4508                                 ' (merge: ' .
4509                                 join(' ', map {
4510                                         $cgi->a({-href => href(action=>"commitdiff",
4511                                                                hash=>$_)},
4512                                                 esc_html(substr($_, 0, 7)));
4513                                 } @{$co{'parents'}} ) .
4514                                 ')';
4515                 }
4516         }
4517
4518         my $hash_parent_param = $hash_parent;
4519         if (!defined $hash_parent) {
4520                 $hash_parent_param =
4521                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4522         }
4523
4524         # read commitdiff
4525         my $fd;
4526         my @difftree;
4527         if ($format eq 'html') {
4528                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4529                         "--no-commit-id", "--patch-with-raw", "--full-index",
4530                         $hash_parent_param, $hash, "--"
4531                         or die_error(undef, "Open git-diff-tree failed");
4532
4533                 while (my $line = <$fd>) {
4534                         chomp $line;
4535                         # empty line ends raw part of diff-tree output
4536                         last unless $line;
4537                         push @difftree, scalar parse_difftree_raw_line($line);
4538                 }
4539
4540         } elsif ($format eq 'plain') {
4541                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4542                         '-p', $hash_parent_param, $hash, "--"
4543                         or die_error(undef, "Open git-diff-tree failed");
4544
4545         } else {
4546                 die_error(undef, "Unknown commitdiff format");
4547         }
4548
4549         # non-textual hash id's can be cached
4550         my $expires;
4551         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4552                 $expires = "+1d";
4553         }
4554
4555         # write commit message
4556         if ($format eq 'html') {
4557                 my $refs = git_get_references();
4558                 my $ref = format_ref_marker($refs, $co{'id'});
4559
4560                 git_header_html(undef, $expires);
4561                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4562                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4563                 git_print_authorship(\%co);
4564                 print "<div class=\"page_body\">\n";
4565                 if (@{$co{'comment'}} > 1) {
4566                         print "<div class=\"log\">\n";
4567                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4568                         print "</div>\n"; # class="log"
4569                 }
4570
4571         } elsif ($format eq 'plain') {
4572                 my $refs = git_get_references("tags");
4573                 my $tagname = git_get_rev_name_tags($hash);
4574                 my $filename = basename($project) . "-$hash.patch";
4575
4576                 print $cgi->header(
4577                         -type => 'text/plain',
4578                         -charset => 'utf-8',
4579                         -expires => $expires,
4580                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4581                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4582                 print <<TEXT;
4583 From: $co{'author'}
4584 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4585 Subject: $co{'title'}
4586 TEXT
4587                 print "X-Git-Tag: $tagname\n" if $tagname;
4588                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4589
4590                 foreach my $line (@{$co{'comment'}}) {
4591                         print "$line\n";
4592                 }
4593                 print "---\n\n";
4594         }
4595
4596         # write patch
4597         if ($format eq 'html') {
4598                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4599                 print "<br/>\n";
4600
4601                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4602                 close $fd;
4603                 print "</div>\n"; # class="page_body"
4604                 git_footer_html();
4605
4606         } elsif ($format eq 'plain') {
4607                 local $/ = undef;
4608                 print <$fd>;
4609                 close $fd
4610                         or print "Reading git-diff-tree failed\n";
4611         }
4612 }
4613
4614 sub git_commitdiff_plain {
4615         git_commitdiff('plain');
4616 }
4617
4618 sub git_history {
4619         if (!defined $hash_base) {
4620                 $hash_base = git_get_head_hash($project);
4621         }
4622         if (!defined $page) {
4623                 $page = 0;
4624         }
4625         my $ftype;
4626         my %co = parse_commit($hash_base);
4627         if (!%co) {
4628                 die_error(undef, "Unknown commit object");
4629         }
4630
4631         my $refs = git_get_references();
4632         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4633
4634         if (!defined $hash && defined $file_name) {
4635                 $hash = git_get_hash_by_path($hash_base, $file_name);
4636         }
4637         if (defined $hash) {
4638                 $ftype = git_get_type($hash);
4639         }
4640
4641         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4642
4643         my $paging_nav = '';
4644         if ($page > 0) {
4645                 $paging_nav .=
4646                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4647                                                file_name=>$file_name)},
4648                                 "first");
4649                 $paging_nav .= " &sdot; " .
4650                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4651                                                file_name=>$file_name, page=>$page-1),
4652                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4653         } else {
4654                 $paging_nav .= "first";
4655                 $paging_nav .= " &sdot; prev";
4656         }
4657         if ($#commitlist >= 100) {
4658                 $paging_nav .= " &sdot; " .
4659                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4660                                                file_name=>$file_name, page=>$page+1),
4661                                  -accesskey => "n", -title => "Alt-n"}, "next");
4662         } else {
4663                 $paging_nav .= " &sdot; next";
4664         }
4665         my $next_link = '';
4666         if ($#commitlist >= 100) {
4667                 $next_link =
4668                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4669                                                file_name=>$file_name, page=>$page+1),
4670                                  -accesskey => "n", -title => "Alt-n"}, "next");
4671         }
4672
4673         git_header_html();
4674         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4675         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4676         git_print_page_path($file_name, $ftype, $hash_base);
4677
4678         git_history_body(\@commitlist, 0, 99,
4679                          $refs, $hash_base, $ftype, $next_link);
4680
4681         git_footer_html();
4682 }
4683
4684 sub git_search {
4685         my ($have_search) = gitweb_check_feature('search');
4686         if (!$have_search) {
4687                 die_error('403 Permission denied', "Permission denied");
4688         }
4689         if (!defined $searchtext) {
4690                 die_error(undef, "Text field empty");
4691         }
4692         if (!defined $hash) {
4693                 $hash = git_get_head_hash($project);
4694         }
4695         my %co = parse_commit($hash);
4696         if (!%co) {
4697                 die_error(undef, "Unknown commit object");
4698         }
4699         if (!defined $page) {
4700                 $page = 0;
4701         }
4702
4703         $searchtype ||= 'commit';
4704         if ($searchtype eq 'pickaxe') {
4705                 # pickaxe may take all resources of your box and run for several minutes
4706                 # with every query - so decide by yourself how public you make this feature
4707                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4708                 if (!$have_pickaxe) {
4709                         die_error('403 Permission denied', "Permission denied");
4710                 }
4711         }
4712         if ($searchtype eq 'grep') {
4713                 my ($have_grep) = gitweb_check_feature('grep');
4714                 if (!$have_grep) {
4715                         die_error('403 Permission denied', "Permission denied");
4716                 }
4717         }
4718
4719         git_header_html();
4720
4721         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4722                 my $greptype;
4723                 if ($searchtype eq 'commit') {
4724                         $greptype = "--grep=";
4725                 } elsif ($searchtype eq 'author') {
4726                         $greptype = "--author=";
4727                 } elsif ($searchtype eq 'committer') {
4728                         $greptype = "--committer=";
4729                 }
4730                 $greptype .= $search_regexp;
4731                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4732
4733                 my $paging_nav = '';
4734                 if ($page > 0) {
4735                         $paging_nav .=
4736                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4737                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4738                                         "first");
4739                         $paging_nav .= " &sdot; " .
4740                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4741                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4742                                                        page=>$page-1),
4743                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4744                 } else {
4745                         $paging_nav .= "first";
4746                         $paging_nav .= " &sdot; prev";
4747                 }
4748                 if ($#commitlist >= 100) {
4749                         $paging_nav .= " &sdot; " .
4750                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4751                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4752                                                        page=>$page+1),
4753                                          -accesskey => "n", -title => "Alt-n"}, "next");
4754                 } else {
4755                         $paging_nav .= " &sdot; next";
4756                 }
4757                 my $next_link = '';
4758                 if ($#commitlist >= 100) {
4759                         $next_link =
4760                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4761                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4762                                                        page=>$page+1),
4763                                          -accesskey => "n", -title => "Alt-n"}, "next");
4764                 }
4765
4766                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4767                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4768                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4769         }
4770
4771         if ($searchtype eq 'pickaxe') {
4772                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4773                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4774
4775                 print "<table cellspacing=\"0\">\n";
4776                 my $alternate = 1;
4777                 $/ = "\n";
4778                 my $git_command = git_cmd_str();
4779                 my $searchqtext = $searchtext;
4780                 $searchqtext =~ s/'/'\\''/;
4781                 open my $fd, "-|", "$git_command rev-list $hash | " .
4782                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
4783                 undef %co;
4784                 my @files;
4785                 while (my $line = <$fd>) {
4786                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4787                                 my %set;
4788                                 $set{'file'} = $6;
4789                                 $set{'from_id'} = $3;
4790                                 $set{'to_id'} = $4;
4791                                 $set{'id'} = $set{'to_id'};
4792                                 if ($set{'id'} =~ m/0{40}/) {
4793                                         $set{'id'} = $set{'from_id'};
4794                                 }
4795                                 if ($set{'id'} =~ m/0{40}/) {
4796                                         next;
4797                                 }
4798                                 push @files, \%set;
4799                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4800                                 if (%co) {
4801                                         if ($alternate) {
4802                                                 print "<tr class=\"dark\">\n";
4803                                         } else {
4804                                                 print "<tr class=\"light\">\n";
4805                                         }
4806                                         $alternate ^= 1;
4807                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4808                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4809                                               "<td>" .
4810                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4811                                                       -class => "list subject"},
4812                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4813                                         while (my $setref = shift @files) {
4814                                                 my %set = %$setref;
4815                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4816                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4817                                                               -class => "list"},
4818                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4819                                                       "<br/>\n";
4820                                         }
4821                                         print "</td>\n" .
4822                                               "<td class=\"link\">" .
4823                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4824                                               " | " .
4825                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4826                                         print "</td>\n" .
4827                                               "</tr>\n";
4828                                 }
4829                                 %co = parse_commit($1);
4830                         }
4831                 }
4832                 close $fd;
4833
4834                 print "</table>\n";
4835         }
4836
4837         if ($searchtype eq 'grep') {
4838                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4839                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4840
4841                 print "<table cellspacing=\"0\">\n";
4842                 my $alternate = 1;
4843                 my $matches = 0;
4844                 $/ = "\n";
4845                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
4846                 my $lastfile = '';
4847                 while (my $line = <$fd>) {
4848                         chomp $line;
4849                         my ($file, $lno, $ltext, $binary);
4850                         last if ($matches++ > 1000);
4851                         if ($line =~ /^Binary file (.+) matches$/) {
4852                                 $file = $1;
4853                                 $binary = 1;
4854                         } else {
4855                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
4856                         }
4857                         if ($file ne $lastfile) {
4858                                 $lastfile and print "</td></tr>\n";
4859                                 if ($alternate++) {
4860                                         print "<tr class=\"dark\">\n";
4861                                 } else {
4862                                         print "<tr class=\"light\">\n";
4863                                 }
4864                                 print "<td class=\"list\">".
4865                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
4866                                                                file_name=>"$file"),
4867                                                 -class => "list"}, esc_path($file));
4868                                 print "</td><td>\n";
4869                                 $lastfile = $file;
4870                         }
4871                         if ($binary) {
4872                                 print "<div class=\"binary\">Binary file</div>\n";
4873                         } else {
4874                                 $ltext = untabify($ltext);
4875                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
4876                                         $ltext = esc_html($1, -nbsp=>1);
4877                                         $ltext .= '<span class="match">';
4878                                         $ltext .= esc_html($2, -nbsp=>1);
4879                                         $ltext .= '</span>';
4880                                         $ltext .= esc_html($3, -nbsp=>1);
4881                                 } else {
4882                                         $ltext = esc_html($ltext, -nbsp=>1);
4883                                 }
4884                                 print "<div class=\"pre\">" .
4885                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
4886                                                                file_name=>"$file").'#l'.$lno,
4887                                                 -class => "linenr"}, sprintf('%4i', $lno))
4888                                         . ' ' .  $ltext . "</div>\n";
4889                         }
4890                 }
4891                 if ($lastfile) {
4892                         print "</td></tr>\n";
4893                         if ($matches > 1000) {
4894                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
4895                         }
4896                 } else {
4897                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
4898                 }
4899                 close $fd;
4900
4901                 print "</table>\n";
4902         }
4903         git_footer_html();
4904 }
4905
4906 sub git_search_help {
4907         git_header_html();
4908         git_print_page_nav('','', $hash,$hash,$hash);
4909         print <<EOT;
4910 <dl>
4911 <dt><b>commit</b></dt>
4912 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4913 EOT
4914         my ($have_grep) = gitweb_check_feature('grep');
4915         if ($have_grep) {
4916                 print <<EOT;
4917 <dt><b>grep</b></dt>
4918 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
4919     a different one) are searched for the given
4920 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
4921 (POSIX extended) and the matches are listed. On large
4922 trees, this search can take a while and put some strain on the server, so please use it with
4923 some consideration.</dd>
4924 EOT
4925         }
4926         print <<EOT;
4927 <dt><b>author</b></dt>
4928 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4929 <dt><b>committer</b></dt>
4930 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4931 EOT
4932         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4933         if ($have_pickaxe) {
4934                 print <<EOT;
4935 <dt><b>pickaxe</b></dt>
4936 <dd>All commits that caused the string to appear or disappear from any file (changes that
4937 added, removed or "modified" the string) will be listed. This search can take a while and
4938 takes a lot of strain on the server, so please use it wisely.</dd>
4939 EOT
4940         }
4941         print "</dl>\n";
4942         git_footer_html();
4943 }
4944
4945 sub git_shortlog {
4946         my $head = git_get_head_hash($project);
4947         if (!defined $hash) {
4948                 $hash = $head;
4949         }
4950         if (!defined $page) {
4951                 $page = 0;
4952         }
4953         my $refs = git_get_references();
4954
4955         my @commitlist = parse_commits($hash, 101, (100 * $page));
4956
4957         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4958         my $next_link = '';
4959         if ($#commitlist >= 100) {
4960                 $next_link =
4961                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4962                                  -accesskey => "n", -title => "Alt-n"}, "next");
4963         }
4964
4965         git_header_html();
4966         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4967         git_print_header_div('summary', $project);
4968
4969         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4970
4971         git_footer_html();
4972 }
4973
4974 ## ......................................................................
4975 ## feeds (RSS, Atom; OPML)
4976
4977 sub git_feed {
4978         my $format = shift || 'atom';
4979         my ($have_blame) = gitweb_check_feature('blame');
4980
4981         # Atom: http://www.atomenabled.org/developers/syndication/
4982         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4983         if ($format ne 'rss' && $format ne 'atom') {
4984                 die_error(undef, "Unknown web feed format");
4985         }
4986
4987         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4988         my $head = $hash || 'HEAD';
4989         my @commitlist = parse_commits($head, 150);
4990
4991         my %latest_commit;
4992         my %latest_date;
4993         my $content_type = "application/$format+xml";
4994         if (defined $cgi->http('HTTP_ACCEPT') &&
4995                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4996                 # browser (feed reader) prefers text/xml
4997                 $content_type = 'text/xml';
4998         }
4999         if (defined($commitlist[0])) {
5000                 %latest_commit = %{$commitlist[0]};
5001                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5002                 print $cgi->header(
5003                         -type => $content_type,
5004                         -charset => 'utf-8',
5005                         -last_modified => $latest_date{'rfc2822'});
5006         } else {
5007                 print $cgi->header(
5008                         -type => $content_type,
5009                         -charset => 'utf-8');
5010         }
5011
5012         # Optimization: skip generating the body if client asks only
5013         # for Last-Modified date.
5014         return if ($cgi->request_method() eq 'HEAD');
5015
5016         # header variables
5017         my $title = "$site_name - $project/$action";
5018         my $feed_type = 'log';
5019         if (defined $hash) {
5020                 $title .= " - '$hash'";
5021                 $feed_type = 'branch log';
5022                 if (defined $file_name) {
5023                         $title .= " :: $file_name";
5024                         $feed_type = 'history';
5025                 }
5026         } elsif (defined $file_name) {
5027                 $title .= " - $file_name";
5028                 $feed_type = 'history';
5029         }
5030         $title .= " $feed_type";
5031         my $descr = git_get_project_description($project);
5032         if (defined $descr) {
5033                 $descr = esc_html($descr);
5034         } else {
5035                 $descr = "$project " .
5036                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5037                          " feed";
5038         }
5039         my $owner = git_get_project_owner($project);
5040         $owner = esc_html($owner);
5041
5042         #header
5043         my $alt_url;
5044         if (defined $file_name) {
5045                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5046         } elsif (defined $hash) {
5047                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5048         } else {
5049                 $alt_url = href(-full=>1, action=>"summary");
5050         }
5051         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5052         if ($format eq 'rss') {
5053                 print <<XML;
5054 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5055 <channel>
5056 XML
5057                 print "<title>$title</title>\n" .
5058                       "<link>$alt_url</link>\n" .
5059                       "<description>$descr</description>\n" .
5060                       "<language>en</language>\n";
5061         } elsif ($format eq 'atom') {
5062                 print <<XML;
5063 <feed xmlns="http://www.w3.org/2005/Atom">
5064 XML
5065                 print "<title>$title</title>\n" .
5066                       "<subtitle>$descr</subtitle>\n" .
5067                       '<link rel="alternate" type="text/html" href="' .
5068                       $alt_url . '" />' . "\n" .
5069                       '<link rel="self" type="' . $content_type . '" href="' .
5070                       $cgi->self_url() . '" />' . "\n" .
5071                       "<id>" . href(-full=>1) . "</id>\n" .
5072                       # use project owner for feed author
5073                       "<author><name>$owner</name></author>\n";
5074                 if (defined $favicon) {
5075                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5076                 }
5077                 if (defined $logo_url) {
5078                         # not twice as wide as tall: 72 x 27 pixels
5079                         print "<logo>" . esc_url($logo) . "</logo>\n";
5080                 }
5081                 if (! %latest_date) {
5082                         # dummy date to keep the feed valid until commits trickle in:
5083                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5084                 } else {
5085                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5086                 }
5087         }
5088
5089         # contents
5090         for (my $i = 0; $i <= $#commitlist; $i++) {
5091                 my %co = %{$commitlist[$i]};
5092                 my $commit = $co{'id'};
5093                 # we read 150, we always show 30 and the ones more recent than 48 hours
5094                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5095                         last;
5096                 }
5097                 my %cd = parse_date($co{'author_epoch'});
5098
5099                 # get list of changed files
5100                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5101                         $co{'parent'} || "--root",
5102                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5103                         or next;
5104                 my @difftree = map { chomp; $_ } <$fd>;
5105                 close $fd
5106                         or next;
5107
5108                 # print element (entry, item)
5109                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5110                 if ($format eq 'rss') {
5111                         print "<item>\n" .
5112                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5113                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5114                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5115                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5116                               "<link>$co_url</link>\n" .
5117                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5118                               "<content:encoded>" .
5119                               "<![CDATA[\n";
5120                 } elsif ($format eq 'atom') {
5121                         print "<entry>\n" .
5122                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5123                               "<updated>$cd{'iso-8601'}</updated>\n" .
5124                               "<author>\n" .
5125                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5126                         if ($co{'author_email'}) {
5127                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5128                         }
5129                         print "</author>\n" .
5130                               # use committer for contributor
5131                               "<contributor>\n" .
5132                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5133                         if ($co{'committer_email'}) {
5134                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5135                         }
5136                         print "</contributor>\n" .
5137                               "<published>$cd{'iso-8601'}</published>\n" .
5138                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5139                               "<id>$co_url</id>\n" .
5140                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5141                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5142                 }
5143                 my $comment = $co{'comment'};
5144                 print "<pre>\n";
5145                 foreach my $line (@$comment) {
5146                         $line = esc_html($line);
5147                         print "$line\n";
5148                 }
5149                 print "</pre><ul>\n";
5150                 foreach my $difftree_line (@difftree) {
5151                         my %difftree = parse_difftree_raw_line($difftree_line);
5152                         next if !$difftree{'from_id'};
5153
5154                         my $file = $difftree{'file'} || $difftree{'to_file'};
5155
5156                         print "<li>" .
5157                               "[" .
5158                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5159                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5160                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5161                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5162                                       -title => "diff"}, 'D');
5163                         if ($have_blame) {
5164                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5165                                                              file_name=>$file, hash_base=>$commit),
5166                                               -title => "blame"}, 'B');
5167                         }
5168                         # if this is not a feed of a file history
5169                         if (!defined $file_name || $file_name ne $file) {
5170                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5171                                                              file_name=>$file, hash=>$commit),
5172                                               -title => "history"}, 'H');
5173                         }
5174                         $file = esc_path($file);
5175                         print "] ".
5176                               "$file</li>\n";
5177                 }
5178                 if ($format eq 'rss') {
5179                         print "</ul>]]>\n" .
5180                               "</content:encoded>\n" .
5181                               "</item>\n";
5182                 } elsif ($format eq 'atom') {
5183                         print "</ul>\n</div>\n" .
5184                               "</content>\n" .
5185                               "</entry>\n";
5186                 }
5187         }
5188
5189         # end of feed
5190         if ($format eq 'rss') {
5191                 print "</channel>\n</rss>\n";
5192         }       elsif ($format eq 'atom') {
5193                 print "</feed>\n";
5194         }
5195 }
5196
5197 sub git_rss {
5198         git_feed('rss');
5199 }
5200
5201 sub git_atom {
5202         git_feed('atom');
5203 }
5204
5205 sub git_opml {
5206         my @list = git_get_projects_list();
5207
5208         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5209         print <<XML;
5210 <?xml version="1.0" encoding="utf-8"?>
5211 <opml version="1.0">
5212 <head>
5213   <title>$site_name OPML Export</title>
5214 </head>
5215 <body>
5216 <outline text="git RSS feeds">
5217 XML
5218
5219         foreach my $pr (@list) {
5220                 my %proj = %$pr;
5221                 my $head = git_get_head_hash($proj{'path'});
5222                 if (!defined $head) {
5223                         next;
5224                 }
5225                 $git_dir = "$projectroot/$proj{'path'}";
5226                 my %co = parse_commit($head);
5227                 if (!%co) {
5228                         next;
5229                 }
5230
5231                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5232                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5233                 my $html = "$my_url?p=$proj{'path'};a=summary";
5234                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5235         }
5236         print <<XML;
5237 </outline>
5238 </body>
5239 </opml>
5240 XML
5241 }